ADAU1442 ASRC Implementation
Hello Everybody!
My proposed design involves an ASRC in which the Sigma DSP accepts S/PDIF input signals at different sampling rates and output as a S/PDIF signal as well. Say for example, incoming signals at multiples of 44.1KHz shall be sampled at 176.4KHz, otherwise sampling frequency will be default value of 192kHz.
Input Rate: Output Sampling Rate :
44.1kHz (88.2kHz, etc....) -------------------> 176.4kHz
the rest ---------------------------------> 196kHz
How will the DSP detect such variation and decide which sampling rate to choose? How can the detected sampling rates be quantitatively measured so it can be verified? How can this be implemented in SigmaStudio (I/O block routing, placement, hardware settings?). Any reference link from previous threads?
Im' new to ASRC and so far I haven't grasped the concepts and implementation I've read from the resources in the forum.
Thanks in advance!
Regards,
Dan
Message was edited by: Dan Gumera
Audio Signal Processors
spdif
adau144x
sampling rate conversion
adau1442
sigmastudio
SigmaDSP Audio Processors
SigmaDSP
asrc
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Hello!
I have the same problem at the moment.... Does anyone have a reference inmplementation for automatic sample rate detection?
If possible, I would need an automatic sample rate detection on my I2S (instead of SPDIF) channels. If that's not possible, I would need to run different I2S channels at different, but fixed sample rates. Since I get the ADAU1442 on a custom board in a few days,it would be very helpful to know how I can start correctly!
Best regards
grimbart
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