Topic: What's wrong with my setup?

I'm having problems if I set my audio buffer to less than 512. The sound would be totally screwed up. I hear people using buffer size of less than 128. How is this accomplished?

I'm using a Lenovo Thinkpad with i3 processor and 4GB ram. I also use the Lexicon Omega USB audio interface. The driver I'm using is the ASIO4ALL driver.

Also, I can set the buffer size in ASIO4ALL utility and in the Pianoteq config menu. Which of those affect latency?

Re: What's wrong with my setup?

rd wrote:

Also, I can set the buffer size in ASIO4ALL utility and in the Pianoteq config menu. Which of those affect latency?

Both are the same parameter affecting the latency in the same way.


Your audio card doesn't have its own ASIO drivers? If it has them, you should try using those instead of A4A.

Hard work and guts!

Re: What's wrong with my setup?

My audio card has an ASIO driver, but for some reason Pianoteq trial version doesn't recognize it (doesn't show up on the device menu).

Re: What's wrong with my setup?

You may want to check what is displayed in the pianoteq options / perf panel. When you play a few notes, if the displayed cpu speed is constantly changing to very low values, and the graph contains red bars and is very irregular, that probably means that your laptop is constantly reducing its frequency to save power. In that case, switch your power saving profile to "Performance" mode.

Re: What's wrong with my setup?

I have the power settings in performance mode. The performance index that I'm getting is 45. There are no red bars, and the graph looks almost flat. I tried updating my Lexicon Omega ASIO driver, but still I am getting pop and crackles when I set the buffer size to something small.

The only good result I'm getting is with the ASIO4ALL driver and setting the buffer size to 768 in Pianoteq, but in the ASIO4ALL utility, the buffer size is 128... I don't know the difference between the two settings... which one actually matters?.

Would a firewire audio interface improve my latency?

Last edited by rd (14-09-2010 16:35)

Re: What's wrong with my setup?

Only the latency reported in Pianoteq matters, the A4A utility is offline setting which doesn't influence any running programs.

Hard work and guts!

Re: What's wrong with my setup?

maybe you can try to run pianoteq as a vst plugin in a host application (vsthost,  minihost, or cubase, sonar, reaper etc), and try to use the native asio in these hosts ? that would allow you to check if you can achieve a better latency with the native asio.

Re: What's wrong with my setup?

Thank you for the replies.

I will try running Pianoteq as a vst plugin. So changing my audio interface would probably not help? Would minimizing the number of running processes on my computer help? My laptop came with too much bloatware.

Last edited by rd (14-09-2010 20:53)

Re: What's wrong with my setup?

rd wrote:

Would minimizing the number of running processes on my computer help? My laptop came with too much bloatware.

Absolutely!

Re: What's wrong with my setup?

Lots of things can cause problems. Virus checkers and just being on the internet are bad. Check to be sure that you have indexing turned off in Windows, too. Otherwise, the system is always working in the background.