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MMDVM
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Begin conversion to 48 kHz sample rate.

This commit is contained in:
Jonathan Naylor 2017-10-12 12:38:32 +01:00
parent 11809a6baf
commit 4a8d2d5cd1
6 changed files with 47 additions and 7 deletions
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4
DMRDefines.h
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@ -1,5 +1,5 @@
/*
* Copyright (C) 2009-2016 by Jonathan Naylor G4KLX
* Copyright (C) 2009-2017 by Jonathan Naylor G4KLX
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -19,7 +19,7 @@
#if !defined(DMRDEFINES_H)
#define DMRDEFINES_H
const unsigned int DMR_RADIO_SYMBOL_LENGTH = 5U; // At 24 kHz sample rate
const unsigned int DMR_RADIO_SYMBOL_LENGTH = 10U; // At 48 kHz sample rate
const unsigned int DMR_FRAME_LENGTH_BYTES = 33U;
const unsigned int DMR_FRAME_LENGTH_BITS = DMR_FRAME_LENGTH_BYTES * 8U;

2
DStarDefines.h
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@ -19,7 +19,7 @@
#if !defined(DSTARDEFINES_H)
#define DSTARDEFINES_H
const unsigned int DSTAR_RADIO_SYMBOL_LENGTH = 5U; // At 24 kHz sample rate
const unsigned int DSTAR_RADIO_SYMBOL_LENGTH = 10U; // At 48 kHz sample rate
const unsigned int DSTAR_HEADER_LENGTH_BYTES = 41U;

4
IO.cpp
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@ -27,8 +27,8 @@ static q31_t DC_FILTER[] = {3367972, 0, 3367972, 0, 2140747704, 0}; // {b0, 0,
const uint32_t DC_FILTER_STAGES = 1U; // One Biquad stage
// One symbol boxcar filter
static q15_t BOXCAR_FILTER[] = {12000, 12000, 12000, 12000, 12000, 0};
const uint16_t BOXCAR_FILTER_LEN = 6U;
static q15_t BOXCAR_FILTER[] = {6000, 6000, 6000, 6000, 6000, 6000, 6000, 6000, 6000, 6000, 0, 0};
const uint16_t BOXCAR_FILTER_LEN = 12U;
const uint16_t DC_OFFSET = 2048U;

2
P25Defines.h
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@ -19,7 +19,7 @@
#if !defined(P25DEFINES_H)
#define P25DEFINES_H
const unsigned int P25_RADIO_SYMBOL_LENGTH = 5U; // At 24 kHz sample rate
const unsigned int P25_RADIO_SYMBOL_LENGTH = 10U; // At 48 kHz sample rate
const unsigned int P25_HDR_FRAME_LENGTH_BYTES = 99U;
const unsigned int P25_HDR_FRAME_LENGTH_BITS = P25_HDR_FRAME_LENGTH_BYTES * 8U;

40
TODO.txt Normal file
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@ -0,0 +1,40 @@
Jobs To Do
----------
1. DC Offset coefficients
2. TX Filters:
D-Star
DMR
YSF
P25
3. TX Filter workspaces and clearing:
D-Star
DMR
YSF
P25
4. CW Id sine wave, silence and construction
5. RX Filters
6. RX Filter workspaces and clearing:
D-Star
DMR
YSF
P25
7. Sample ring buffer sizing
RX
TX
8. TX symbols.
9. DC Offset workspace and clearing.
10. Hardware sample rates:
Due
STM32
Teensy
Jobs Done
---------
1. Boxcar coefficients
2. Symbols lengths for:
D-Star
DMR
YSF
P25

2
YSFDefines.h
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@ -19,7 +19,7 @@
#if !defined(YSFDEFINES_H)
#define YSFDEFINES_H
const unsigned int YSF_RADIO_SYMBOL_LENGTH = 5U; // At 24 kHz sample rate
const unsigned int YSF_RADIO_SYMBOL_LENGTH = 10U; // At 48 kHz sample rate
const unsigned int YSF_FRAME_LENGTH_BYTES = 120U;
const unsigned int YSF_FRAME_LENGTH_BITS = YSF_FRAME_LENGTH_BYTES * 8U;