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audio codec performance measurement DAQ

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Life is Wonderful
Life is Wonderful am 18 Mai 2022
I'm seeking for a Mathworks tool or interface that supports audio codec performance.
SNR, Total harmonic distortion, cross-talk, ISI, and other DAC and ADC performance characteristics for audio codecs
Any assistance would be greatly appreciated.

Akzeptierte Antwort

Jimmy Lapierre
Jimmy Lapierre am 25 Mai 2022
Hi, I think the Spectrum Analyzer could help. Here is an example:
  7 Kommentare
Walter Roberson
Walter Roberson am 14 Jul. 2022
Are you using Windows? If so then it is possible to get a loopback driver that can copy output to input without going through hardware. You would use that to test what the actual digital signal is. When you create a hardware loopback as a patch between output and input you are also implicitly testing the quality of the output hardware, and the cable, and the input hardware.
Life is Wonderful
Life is Wonderful am 15 Jul. 2022
You're looking at things from the right angle for my setup needs.
For Windows, ASIO4ALL works well, but I'm not sure how to proceed with Linux.
Unfortunately, Linux is my preferred operating system, and I need a hardware loopback with DAC [playback] and ADC [recording] capabilities.
A target device that supports audio/video resolutions of 8, 16, 24, and 32 bits is what I'd like to use for this.
Sending and receiving signals to and from the target are the responsibility of the host.
I measure the back using AsyncBuffer for a sine signal with data type range from 8 to 32 bits ( Indata = A * sin (2 * pi *f* t + noise), as proposed by @Jimmy Lapierre.

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