As we have seen with ASR measurements, AVR/AVP's have a difficult time approaching the SINAD of relatively inexpensive desktop DACs and sometimes not even matching a dongle-DAC.
These devices are clearly more complex and shielding and other design issues are present on some but, there may be a theoretical limit to SINAD due the nature of the device. That is what is being discussed here.
The theoretical processors under discussion has the following assumptions:
- All non-subwoofer channels can accept a 0 DBFS signal from the source
- The non-subwoofer channels (for example 13) can be bass-managed
- The subwoofer implementation does not have any capability for additional analog gain (for higher that 0 DBFS) so the added bass from other channels cannot exceed the digital maximum.
In this example, does bass management require attenuation of main channels in order to provide headroom for the subwoofer channel?
If so, what is the required attenuation?
If for example, it is 10 to, say, 18 dB then wouldn't that limit the achievable SINAD?
- Rich
These devices are clearly more complex and shielding and other design issues are present on some but, there may be a theoretical limit to SINAD due the nature of the device. That is what is being discussed here.
The theoretical processors under discussion has the following assumptions:
- All non-subwoofer channels can accept a 0 DBFS signal from the source
- The non-subwoofer channels (for example 13) can be bass-managed
- The subwoofer implementation does not have any capability for additional analog gain (for higher that 0 DBFS) so the added bass from other channels cannot exceed the digital maximum.
In this example, does bass management require attenuation of main channels in order to provide headroom for the subwoofer channel?
If so, what is the required attenuation?
If for example, it is 10 to, say, 18 dB then wouldn't that limit the achievable SINAD?
- Rich