#include <gr_sync_interpolator.h>
Include dependency graph for cvsd_decode_bs.h:
Go to the source code of this file.
Classes | |
| class | cvsd_decode_bs |
| This block performs CVSD audio decoding. Its design and implementation is modeled after the CVSD encoder/decoder specifications defined in the Bluetooth standard. More... | |
Functions | |
| cvsd_decode_bs_sptr | cvsd_make_decode_bs (short min_step=10, short max_step=1280, double step_decay=0.9990234375, double accum_decay=0.96875, int K=32, int J=4, short pos_accum_max=32767, short neg_accum_max=-32767) |
| Constructor parameters to initialize the CVSD decoder. The default values are modeled after the Bluetooth standard and should not be changed, except by an advanced user. | |
Function Documentation
| cvsd_decode_bs_sptr cvsd_make_decode_bs | ( | short | min_step = 10, |
| short | max_step = 1280, |
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| double | step_decay = 0.9990234375, |
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| double | accum_decay = 0.96875, |
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| int | K = 32, |
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| int | J = 4, |
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| short | pos_accum_max = 32767, |
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| short | neg_accum_max = -32767 |
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| ) |
Constructor parameters to initialize the CVSD decoder. The default values are modeled after the Bluetooth standard and should not be changed, except by an advanced user.
- Parameters:
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min_step Minimum step size used to update the internal reference. Default: "10" max_step Maximum step size used to update the internal reference. Default: "1280" step_decay Decay factor applied to step size when there is not a run of J output 1s or 0s. Default: "0.9990234375" (i.e. 1-1/1024) accum_decay Decay factor applied to the internal reference during every interation of the codec. Default: "0.96875" (i.e. 1-1/32) K; Size of shift register; the number of output bits remembered by codec (must be less or equal to 32). Default: "32" J; Number of bits in the shift register that are equal; i.e. the size of a run of 1s, 0s. Default: "4" pos_accum_max Maximum integer value allowed for the internal reference. Default: "32767" (2^15 - 1 or MAXSHORT) neg_accum_max Minimum integer value allowed for the internal reference. Default: "-32767" (-2^15 + 1 or MINSHORT+1)
