Topic: USB audio and sound cards

I'm considering purchasing a piano that has internal speakers and supports USB audio. Examples include the Yamaha P515 and the Dexibell P7. My desire is to only use one cable to connect a computer to the keyboard, having the ability to play the audio from Pianoteq directly to the piano's internal speakers.

I know that this is possible, but I do not fully understand how this affects the use of sound cards and drivers. If USB audio is used, does this mean that the sound processing is done on the piano, bypassing the sound card on the computer? For example, if I were to use Pianoteq on a Raspberry Pi, would that mean I would not be required to attach a sound card to the Raspberry Pi?

Has anyone tried a setup like this with Pianoteq?

Re: USB audio and sound cards

Yeah it should work. Reading the manual usually provides enough information. Both devices can act as USB audio and MIDI interfaces.

Hard work and guts!

Re: USB audio and sound cards

I have a studiologic Numa compact 2.
Usb audio on this device works pretty well, but the internal speakers are rubbish. Midi and USB audio travel through one USB cable and I use a pair of monitors instead of the internal speakers.

Re: USB audio and sound cards

Internal speakers of digital pianos, certainly portable ones, never compare to a good pair of monitors. Period.
This put aside, the USB audio + MIDI solution works flawlessly for example on my Yamaha MX88 synth: it allows me to have only one output (PTQ + synth) to connect to the monitors.

Re: USB audio and sound cards

Luc Henrion wrote:

Internal speakers of digital pianos, certainly portable ones, never compare to a good pair of monitors. Period.

I find your statement to be generally true. However, there is another element that I found to be important. After a long quest to find a DP with decent speakers (for reasons I'll explain later), I got a Roland FP-80. To my ears, it has the best built-in speakers, at least amongst the models I have tried. I did a side-by-side comparison of FP-90 (the newest) and FP-80. The 80 had clearly better speakers..(and better sound...but that is another topic). In addition to the usual speakers on the top back, it has two smaller ones on the top sides. I think Roland called this system "acoustic projection". I have tried several near-field monitors (including the excellent Blue Sky), but there is something missing: the vibration transmitted by built-in speakers to the keys. When I play the Pianoteq models (particularly the YC5 with its great bass) through the FP-80 speakers as I play it, the impression is uncanny...you truly feel you are playing an acoustic!. 

In other words, even though good external monitors most often have "better" sound, there is something missing from the experience, and I prefer the built-in speakers of my FP-80. Unfortunately, as you said, most digital pianos that feature built-in speakers fail miserably.

Maybe some kind of acoustic coupling of external monitors to the keyboard controller used could get us the best of both approaches?

Last edited by aWc (03-12-2018 20:41)
PT 7.3 with Steinway B and D, U4 upright, YC5, Bechstein DG, Steingraeber, Ant. Petrov, Kremsegg Collection #2, Electric Pianos and Hohner Collection. http://antoinewcaron.com

Re: USB audio and sound cards

Same kind of story for me: my old Casio PX350 has better speakers than the new ones... but not to be compared to monitors, of course. In fact I often use both the internal amplification (exactly: for the vibrations in the fingers!) and the monitors - for the sound. Not bad.

Re: USB audio and sound cards

I also tried to collect some information on this feature in the past.
It seems that the Yamaha CLP-6xx serie provides this feature (but not the CLP625 it seems). However, when you buy this piano, this feature is not immediately supported, you must do a firmware upgrade to have it (for example, see here the page for CPL-635):

https://it.yamaha.com/it/support/update..._firm.html

Except the StudioLogic already mentioned, I have not found other digital pianos with this feature. However, it is also true that you can feed the audio output of your PC to the line-in plug, if the piano supports it. It is an analog signal and not a digital stream and you have one more cable, but it is better than nothing.