AGC Component in PPS

Wade Simpson

Other Parts Discussed in Thread: PCM3070

I have a question regarding the AGC component in PPS. Not fully understanding the various fixed point formatting of data values, however what are the ranges of the MIN_AUDIO, NOISE_LEVEL, and DESIRED_LEVEL? All the PPS help description gives me is what the default values are for the component. but is not useful in determining what I need to set my levels to for the application if no range is being defined.

In addition the Noise level parameter for the AGC component says it's scaling factor is 2.x. Not sure what this means?

Thanks

over 13 years ago

0 Wade Simpson1 over 13 years ago

Prodigy 30 points

I would greatly appreciate some feedback on the SW AGC component in PPS. The help file only provides what the default settings are concerning the DESIRED_LEVEL, MIN_AUDIO_LEVEL, NOISE_LEVEL. What I am looking for is what the range in dB is for these properties.

Please advise

0 Tuan over 13 years ago in reply to Wade Simpson1

TI__Mastermind 33420 points

Hello Wade:

Will you please let me know the device and the type and version of PPS you are running? We have a few PPS type SW running within TI: One for TAS3x, one for AICx and one for TAS57x.

Best regards,

Tuan

0 Wade Simpson1 over 13 years ago in reply to Tuan

Prodigy 30 points

Hello Tuan,

Using PPS Home Audio edition v5.40

Developing on PCM3070 device

Thanks,

Wade

0 Susan Williams over 13 years ago in reply to Tuan

Intellectual 385 points

We have the same question--how to convert between audio units (dB) and the values in the coefficients. We are using the AIC3254.

The picture in the help page is not hi-res, I cannot read it completely when I zoom in on it. This component doesn't appear to be one with an accompanying tool to let you enter your desired values and have the tool compute your coefficients? (I double-click on it and nothing happens.)

0 Wade Simpson1 over 13 years ago in reply to Tuan

Prodigy 30 points

Still waiting for a reply on PPS AGC component. What the coefficient values to dBs are, min/max ranges for each parameter

Using PCM3070 device with PPS Home Audio edition v5.40

Thanks,

Audio

Audio forum

AGC Component in PPS