Topic: Pianoteq Sound Quality - built in soundcard vs audio interface?

Hi there.

In my experience Pianoteq doens't sound good when you use a built in soundcard of a macbook pro sent to your speakers, compared to an audio interface in my case TC Electronic Impact Twin on the same speakers?

The sound with the audio interface seems cleaner, does it have something to do with ad/da conversion, or buffering and sample capabilities? I use

I use 1/4 cables with the audio interface and 3.5 jack from the macbook when connecting to the speakers.

Would be nice to know if an audio interface really is necessary, and why ?

Ps (i've tried searching the forum, but didn't have any luck on this particular subject)

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

As I understand it, anybody who is seriously busy with computer-soundgeneration, uses a dedicated outboard audio device. Or perhaps a plugin board inside a PC.

That is, simply, because the firms making these, have a lot of specialised experience in this field, and can produce far better specifications than onboard audio can give you.

Besides, the input/output connectivity is far greater and better, like symmetric output conncetors, having a much wider dynamic range, etc ec.

Not to mention the ASIO drivers that are being used in these devices, which give you far better latency.
Also most of the time there is better software coming bundled with these devices, like phase scopes, spectrum analyser, and also useful tools like equaliseers, limiters etc etc.

I could go on for some time....pls buy a dedicated audio device, this piano is worth it!!

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

Its all about the sound quality and the latency. http://www.dawbench.com/audio-int-lowlatency2.htm

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

AKM wrote:

Its all about the sound quality and the latency. http://www.dawbench.com/audio-int-lowlatency2.htm

I guess that could have something to do with it, however the sample rate and buffer size are the same when i choose between built in output and my TC Electronic Impact Twin audio interface in Pianoteq. So that doesn't seem to be the problem I guess.

So far it seems that geert's answer is quite good!

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

When you use Pianoteq just as converter midi to wav, the soundcard doesn't matter, because it's not used at all. Soundcard matter only with real-time paying.

For me, internal soundcard of my cheap laptop + good headphones produce very good sound, I need no more for real-time playing.

Last edited by Ross (02-12-2014 05:56)
Combine velocity curves: http://output.jsbin.com/cukeme/9

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

I'd like to share a different experience. I am new to digital pianos, and from what I read in several forums, an external sound card is supposedly always better than the onboard internal one.

So, I bought a Behringer UCA222, it is entry level but it got many enthusiastic reviews.
I tested it extensively, and I can't perceive any quality improvement over my notebook internal Realtek "Intel HD audio" card using good headphones.
Also, the measured latency from keypress to sound out is consistently lower with the internal card rather than the UCA222, even though that is supposedly an "Ultra-Low Latency" card.

I tested the UCA222 with both native ASIO drivers and ASIO4ALL drivers, and the internal card using ASIO4ALL in Windows. Under Linux I tested with Alsa and Jack. The notebook is a Sony VAIO Duo 11, and the piano software I tested is Pianoteq and Kontakt.

So, maybe high-end card might be really better... but if you have "HD audio" onboard it may be better than an external card. Unless I'm doing something really wrong, as I said I'm new to the field and willing to learn.

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

Well, as you wrote, the UCA222 is "entry level", that's probably why there is not a big difference. The converters are not even 24 but only 16 bits, which is really not up to current level of quality. And if you look at the Harmonic Distorsion figures, you'll find good interfaces with up to two decimals better figures! So, no, the UCA222 may have received good reviews but it's really only that: an entry level model, with (very) poor specs. I'm not surprised you don't hear a difference, you should try a better spec'ed interface.

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

Ha, I recently bought a Behringer UMX610, which I use for some simple studio work, and it came with this separate audio interface.

It,s indeed no good, when compared with my MOTU microbook 2, EMU 0404 USB, or Focusrite Saffire, which are the ones I use.

This small unit has the benefit of having decent in-outs, and even separate phones output, compared with the laptop situation, BUT: in the mean time most laptops have grown better onboard audio. And this, combined with a ASIOfor ALL driver, gives you indeed sometimes a better audio quality.

So with outboard audio devices we mean NOT these ( there are more on the market) devices.......

I cannot find the Toy piano in v 5.13....help!!

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

geert wrote:

I cannot find the Toy piano in v 5.13....help!!

It's right below Celesta and Glockenspiel in the preset menu... provided you have it sorted by Instrument.

Hard work and guts!

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

I understand, I went too cheap with the UCA222... so, which cards would be good enough to be a substantial improvement in perceived sound quality and latency?
Since I don't need other connectors (midi, mic, line in), I was thinking about something like Traktor Audio 2 or Fiio E17. Would they be good or are they still too entry-level? How much would a quality card cost?

Thank you

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

Fio.....I.ve got a headphone amp from them. Really nice stuff.......

But they are AMP-makers....is not used in prof. recording studios.

IF you do not need  a classical Midi interface, I would opt for the MOTU Microbook 2.
It is small, from a Wellknown brand in the audio world, and quality. I use it permanently for everything, even YT video,s...
And you get very nice software with it. Besides it is 6 ch, you never can tell if you need more channels once.
With the built-in mixer you can do everything. It also has  4 input channels, which also use.
And a very good headphone amp built into it.

But of course, somewhat simpler devices, with only 2 ch are also good, BUT: from de good brands..
Fcusrite Scarlett 2i2 USB, etc.

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

Last time I checked Asio4All with onboard audio was about more than 10 years ago and came to an obvious conclusion that it is a very compromise decision with some flaws here and there. Got the Audiophile 2496 semi-pro soundcard and was absolutely happy about it. The sound quality, delay issues, overall stability - just obviously better. My non-musicians friends also stated with no doubt that the sound quality was much much better even with a consumer speakers - we made some tests on some setups. But just today I tested Asio4All on a Lenovo laptop - onboard audio, inexpensive headphones - and, surprise, worked absolutely great, 64 samples buffer size, no clicks, no noticeable delay, the sound is very nice. So, seems they really improved it all and I could really recommend it.

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

Sure, latency and stability is rather fine with ASIO4All now, but the built-in converters of the internal soundcard are not very often the best you could find. There, an external - of good quality! - soundcard is still a good choice.

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

THe final verdict......with some modern laptops,   and no other plans for setting up your own home sound studio, I wold advise to firt check the onboard sound.

3 things to take care of:

1. Use a low latency ASIO driver.

2. If you are planning to connect active monitor speakers,  check if the latter has - apart from  symmetrical inputs which is the industry standard - also ASYMM input conncetors (RCA). Because there is a significant difference in signal levels ( - 10 dBv versus + 4 dBu).

3. Be aware of the NON-symmetrical connection between two mains supply connected devices, like amps and active monitors, which can give ground loops, over which not only AC spurious, but all sorts of computer-related noises can be generated. Sometimes, connecting a separate thing wire ground connection can improve this.

For connecting outside devices, it is far better to use the SPDIF ( most of the time optical) output signal if provided. this is completely noise-free as it is digital.

From the above you can conclude, that connecting a headphone does not give this noise. BUt it would be nice to compare the spes of the phones output with the requirements of the headphone.

For comfortable headroom in the phones, an output power above 50 milliwatt should be there, which most of the times is limited to some 20 milliwatt or so......

Yes, I studied electronics and acoustics and have been working in this field......

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

I'm just starting out with Pianoteq and I was going to use my laptop's (Acer Aspire S7) built-in RealTek audio using ASIO4All, since the latency is not noticeable to me. 

I decided on the AKG K702 headphones but also picked up a UCA222 since I planned to also add a pair of monitor speakers in time and this would make for a less complex set-up.

The UCA222 has ASIO drivers, they are low latency but are pretty poor and take control over the USB port, unplugging the device from Windows 8.1 with the laptop powered up, screwed up Windows completely and I had to force a hard power down.

However, comparing the sound outputted from Pianoteq using good in ear headphones from the UCA222 and the laptop, there was a distinct difference.  The laptop internal audio using ASIO4All was muffled and overall had a much lower quality when compared to the UCA222,  I wasn't expecting any difference from a $30 device so was quite surprised.

Unfortunately I can't use the UCA222 as it's headphone amp is nowhere near capable of driving the AKG K702s.  I should have done more research on these, as they need a good amp to drive them.  For now I have ordered the Fiio E10K which should be able to drive these well?? and it also has a line out.  There is an ASIO driver for this device but it may well be awful.

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

The E10K can 'almost' drive the AKG k702s but only on full volume and high gain and that's listening to normal audio.

The DAC is useless for for Pianoteq, with both ASIO4All and the native ASIO Driver the latency is awful.

BTW The Native E10K ASIO driver is essentially the RealTek ASIO driver that was released around 2007.  It also only worked with a 32bit Windows laptop under Windows 7,  despite there being a 64bit install it didn't appear in Windows 8.1.

I'm really impressed with the AKG K702 headphones, even with the FiiO E10k but I really need something that can drive them for Pianoteq, any ideas?

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

anks wrote:

I'm really impressed with the AKG K702 headphones, even with the FiiO E10k but I really need something that can drive them for Pianoteq, any ideas?

I use the HP-4 by PreSonus.  Works great.

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

Excellent choice. You can go way up with the price, but the improvements are less audible.

The E10k delivers 200 mW into 32 Ohms, which can drive any headphone.

I bought the E11k recently, it goes even higher with 270 mW, but that is only 1,2 dB louder, so neglectible.

Happy playing!

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

anks wrote:

I'm really impressed with the AKG K702 headphones, even with the FiiO E10k but I really need something that can drive them for Pianoteq, any ideas?

Yes - I suggest this one: http://www.jdslabs.com/products/35/obje...amplifier/  (it's analog only, so you'll need a suitable audio interface)  This one has a very good reputation, and is eminently suitable for driving full sized headphones such as your AKG K702s.

Greg.

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

Yes, looks very good, with 600 milliwatts. But you should definitely need a AC power supply, as changing batteries every 6 hours is a bit annoying.

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

The FiiO E09K and E12 (both amps only - not DACs) could also both drive the K702s very loudly.  Also, if you're happy with the latency using the computer's integrated audio with the ASIO4ALL driver, you could just connect the amp directly to your computer, and forgo the external audio interface.

A couple of rather expensive DAC/amps that I suspect would work well regarding latency are the the Centrance DACmini CX and HiFi-M8.  Centrance have an ASIO driver for download, and they even have a utility for checking ASIO latency, but I'd check with them to make absolutely sure the driver is compatible with those products. Anyway they also could drive the K702s very strongly, going by the specs. (actually the specs for the HiFi-M8 only give "nominal" output levels, but I found a measurement in a review, and it would be fine, IMHO)

Greg.

Last edited by skip (15-12-2014 09:40)

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

Actually I'm surprised the K702s are "hopeless" with the E10K. According to my maths, if Pianoteq is adjusted to output a full scale signal, the peak sound level will be about 113dB SPL (probably even a bit more) which is actually a bit louder (about 4dB) than I can achieve with my setup, and my setup is loud enough with Pianoteq. (I can't make it VERY loud though - it will distort)  There's no way I would describe my setup as "hopeless" though.

I have to wonder whether there's something wrong somewhere.  Anyway, if the latency of the E10K is no good, then I suppose we can forget all about the E10K.......

Greg.

Last edited by skip (15-12-2014 09:34)

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

Ok, the K702 delivers 105 dB/V. That is a quite normal sensitivity compared with others.
Not to mention the K550, which delivers 114 dB/V. that,s why I needed that one, as I have lost 20 dB of my hearing.

But back to the K70(1)2.  The E10k kan output 200 milliWatt, which is at the same time the max power that the K702 may have.

This is in 62 Ohm ( the impedance of the K702) some 3,5 Volts, and in 32 Ohms still some 2,5 volts.
That gives a acoustic level of between 112 and 115 dB, which is only 5 dB below the pain level.

From experience, i can say, that the K702/1 range delivers good output connected to all phones outputs of modern external Audio devices. Le talone, when you use a dedicated phone amp.
It would also be totally unimaginable that a wellknown brand like AKG whould develop a headphone that gives too low output level........

Because of their transparency, they are within this price range,  the best for piano.

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

Ok, the K702 delivers 105 dB/V. That is a quite normal sensitivity compared with others.
Not to mention the K550, which delivers 114 dB/V. that,s why I needed that one, as I have lost 20 dB of my hearing.

But back to the K70(1)2.  The E10k kan output 200 milliWatt, which is at the same time the max power that the K702 may have.

This is in 62 Ohm ( the impedance of the K702) some 3,5 Volts, and in 32 Ohms still some 2,5 volts.
That gives a acoustic level of between 112 and 115 dB, which is only 5 dB below the pain level.

From experience, i can say, that the K702/1 range delivers good output connected to all phones outputs of modern external Audio devices. Le talone, when you use a dedicated phone amp.
It would also be totally unimaginable that a wellknown brand like AKG whould develop a headphone that gives too low output level........

Because of their transparency, they are within this price range,  the best for piano.

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

Geert:
In short, I agree that the K702s should sound pretty loud with the E10K, even for a solo percussive instrument (i.e Pianoteq).  It seems rather academic, given that the latency of the E10K is excessive, which I get the impression makes it unusable(?)

However, I don't agree with some of the details:

But back to the K70(1)2.  The E10k kan output 200 milliWatt, which is at the same time the max power that the K702 may have.
This is in 62 Ohm ( the impedance of the K702) some 3,5 Volts, and in 32 Ohms still some 2,5 volts.
That gives a acoustic level of between 112 and 115 dB, which is only 5 dB below the pain level.

The specs for the E10K say 200mW into 32ohms, and it is incorrect to assume that it can also generate 200mW into 62ohms, or any other impedance for that matter. If the limiting factor for the 200mW into 32ohms is the maximum voltage that the E10K can generate, then that same voltage applied across a 62ohm load will generate only 101mW, and as I said in my previous post, the SPL will be 113dB.   (which is still in your range, but I don't agree with the upper limit of your range.  20*log(2.5/1) + 105 = 113 - not 115)   According to http://www.head-fi.org/t/727793/notes-f...ng-samples the E10K is in fact limited to 2.6 Vrms - I had done this research before attempting to calculate the SPL when connected to the 62 ohm K702s.  (this is the best info I have found, anyway) 2.6 vs 2.5 hardly makes any difference - a fraction of a dB.

This is in 62 Ohm ( the impedance of the K702) some 3,5 Volts, and in 32 Ohms still some 2,5 volts.
That gives a acoustic level of between 112 and 115 dB, which is only 5 dB below the pain level.

Remember that a piano is percussive, so we are only talking about a "peak" sound level - not an average sound level.   Listening to, say, an organ at 115dB would sound much louder than a piano that peaks at 115dB at the moment the hammers strike the strings.  Btw I think this post by NwAvGuy is very useful: http://nwavguy.blogspot.com.au/2011/09/more-power.html

From experience, i can say, that the K702/1 range delivers good output connected to all phones outputs of modern external Audio devices.

My M-Audio Fast Track Ultra only puts out 1 Vrms max at it's headphone outputs, and I am positive that the K702s would not be loud enough for me.

There's another aspect that makes it a bit harder for live playing - it's very difficult to adjust Pianoteq's volume so that it reaches exactly 100%, without Pianoteq ever wanting to go higher than 100% and then of course distorting. So, we will typically leave a a bit spare ("headrooom").  This makes the peaks of our live playing a bit less than a pre-normalised recording, which can have it's peak(s) at precisely 100%, with no distortion.  We can use the limiter to make it easier to reach 100%, but the limiter will then introduce it's own distortion, but in a more pleasing way than hard clipping.

Greg.

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

Greg, you are absolutely right.  I did cut some corners there, and did not spend enough time on te subject.

I assume, the E10 has a farily constant max output voltage, as these opamps have a low internal output impedance and should maintain a rather constant voltage output as long as you stay above the specified minimum load impedance??

greetings, and thanks that you corrected me on this.

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

More or less constant voltage yes. Sometimes, though, when the specs include voltage & power for a range of load impedances, I've noticed that the maths doesn't exactly match a simple ideal voltage generator with a fixed output impedance - the voltage will drop more than it should as the load impedance is reduced.  I'm not sure why this happens, but I'm wondering whether it's due to poor power supply regulation.   But yes - the E10K does have a very low output impedance and I've been ignoring it in my calculations.  Note that the E10K is very different to the E10 - the E10K is a newer design and has a lot more drive than the E10.

Btw - I noticed the Apogee Duet being mentioned in another recent topic - out of curiousity I checked it's headphone amp specs - circa 7 Vrms! This is the first USB audio interface that is designed for performing musicians that I'm aware of that has a headphone amp that has a genuinely high voltage output. Two problems though - very expensive, and Mac only.

Greg.

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

THat is really big output!

For good value for money, this one is also interesting:

http://www.jdslabs.com/products/35/obje...-amplifier

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

Geert: I agree, and in fact that's the same one I recommended right back at the beginning:
http://www.forum-pianoteq.com/viewtopic...06#p936506   

They have the DAC/amp combo too: http://www.jdslabs.com/products/48/o2-odac-combo/  but I'm not sure how well it would work regarding latency/ASIO. 

Greg.

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

Static sounds using headphones:  I'm experiencing low level sporadic (occurs every so often not at regular intervals) static sounds.  My set up is a Scarlet Solo II with an HP 3i laptop (Windows 10), Midi USB to a Roland LX17 piano. The sound quality is better than the Roland inboard sounds IMO.  I've tried another headphone with same results.
Any help would be appreciated.

PS:  Wasn't sure how to post a new subject and judging from the expertise on the topic of this forum I'm hoping you have an answer.

Re: Pianoteq Sound Quality - built in soundcard vs audio interface?

bachmann wrote:

Static sounds using headphones:  I'm experiencing low level sporadic (occurs every so often not at regular intervals) static sounds.  My set up is a Scarlet Solo II with an HP 3i laptop (Windows 10), Midi USB to a Roland LX17 piano. The sound quality is better than the Roland inboard sounds IMO.  I've tried another headphone with same results.
Any help would be appreciated.

PS:  Wasn't sure how to post a new subject and judging from the expertise on the topic of this forum I'm hoping you have an answer.

Is it the same when you run the computer on the battery?