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The Down Sampling module is mainly used to get the input samples to a lower the process and sampling rate. For example the bass portion of the audio need not to be processed at higher sampling rates as the frequencies associated with bass are low.
This module takes the DownSample factor from the GUI parameters and down-samples the input accordingly.
Name | ADSP-214xx | ADSP-215xx/SC5xx | ADAU145x/146x |
---|---|---|---|
—————————— | ——————-- | ——————————-- | —————————- |
Down-Sampler | B | B | S |
Name | Type | Description |
---|---|---|
———————- | ————-- | ———————- |
Input | Audio | Input channel |
Name | Type | Description |
---|---|---|
———————- | ————-- | ———————- |
Output | Audio | Down sampled output |
GUI Parameter Name | Default | Range | Function Description |
---|---|---|---|
—————————————- | ———————- | —————— | —————————————- |
Factor | 2 | 2,4,8,16,32 | The input sample rate will be divided by Factor |
AntiAliasFilter | False | True/False | Enabled/Disabled the anti-alias filter. If enabled, anti-alias filter will be applied before DownSampling the signal |
GUI Parameter Name | Default | Range | Function Description |
---|---|---|---|
—————————————- | ———————- | —————— | —————————————- |
NumChannels | 1 | 1-20 | Number of channels |
Factor | 2 | 2,3,4,6,8,16 | The factor at with the input sample rate will be divided |
Name | Description | ADSP-214xx/215xx/SC5xx | ADAU145x/ADAU146x |
---|---|---|---|
————————— | ———————————————————————————- | —————————————- | ————————-- |
Factor | The factor at with the input sample rate will be divided | Float | FixedPoint8d24 |
NFilterTaps | Number of antialiasing filter coefficients | Float | NA |
FIRCoeffs | coefficients | Float | NA |