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Topic: How to monitor the output band to external DAC (Read 148 times) previous topic - next topic
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How to monitor the output band to external DAC

Hi, if I play from foobar to external DAC, can I somewhere monitor, what format, depth, sampling rate actually transmits over cable out from computer? Used DAC unfortunatelly doesn't display more than stream format LPCM/AAC etc..
I guess that when I'm using WASAPI/ASIO driver which are expected to work in exclusive mode, the sampling and width of source data aren't converted but I'm not sure if that's really so.

 

Re: How to monitor the output band to external DAC

Reply #1
Hi, if I play from foobar to external DAC, can I somewhere monitor, what format, depth, sampling rate actually transmits over cable out from computer? Used DAC unfortunately doesn't display more than stream format LPCM/AAC etc..
I guess that when I'm using WASAPI/ASIO driver which are expected to work in exclusive mode, the sampling and width of source data aren't converted but I'm not sure if that's really so.

Trouble is, some of this info is pretty well masked at the point the data is fed to the DAC. No matter what the file format, the DAC usually gets a SP/DIF, Toslink, I2S, AES3 or whatever stream that is serial PCM and uses 24 or 32 bit data words. 

Yup, when you pass 16 bit audio data to most DACs it is usually padded out to 24 bits. If the DAC is set to operate in 16 bit mode, it is basically told to ignore the low order bits that are passed to it regardless.

 
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