Audacity Forum

I'm not talking about bit rate, only about "sample rate". AC-3 audio is carried on any type of digital audio transport (AES, SPDIF) at 48kHz. If the transport interface is 24-bit transparent, AC-3 will pass without any problem. As an engineer myself, I understand very well what you are talking about...

But Audacity doesn't know if I am feeding compressed audio or not... You said that if the project sample rate equals the soundcard sample rate, then SRC is disabled. In this case, the recorded audio should be exactly the input audio "as is". Am I right on that ? If so, I should be able to record any...

Can you be more precise...

Do you mean that the SRC feature is always enabled, in record and playback modes ?

I tried VLC, it works. But at the moment, I have a problem with the MOTU SPDIF software driven, works only with my analog inputs. I'm on the issue with MOTU... Question for you Audacity experts : Following your comments about the fact that Audacity cannot record compressed audio streams (AC-3 in my ...

Thanks for the info. I'll try it and I will let you know... I am still waiting for my sound card...

VLC can playback AC-3 but cannot record a "live" AC-3 bitstream...

Thanks for this quick answer. Do you know any software that is able to do that ?

It is more complicated than that. Most of the times, the AC-3 signals I need to grab are not available at home, and neither on Internet feeds. As a broadcast engineer, I go in the broadcaster's labs, install the products I designed, and help them to debug their setups. In these conditions, the signa...

I am not working with ADAT, but with broadcast devices like professional Dolby Digital encoders. Sometimes I go in TV stations and need to grab AC-3 for debugging purposes...

You got it. I need to capture the bitstream into a file (I tought I was explicit...). I have a converter box doing AES or SPDIF to USB which sends the audio to a PC. Audacity is great for recording PCM audio, but I would like to know if it can do that also.