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set the sample rate to ratio 10

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KubaPro010
2025-03-16 10:10:09 +01:00
parent 686211524c
commit 344ae5ae0e
6 changed files with 122 additions and 13 deletions
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7
src/rds.h
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@@ -10,9 +10,10 @@
#define GROUP_LENGTH 4
#define BITS_PER_GROUP (GROUP_LENGTH * (BLOCK_SIZE + POLY_DEG))
#define RDS_SAMPLE_RATE 9500
#define SAMPLES_PER_BIT 8 // (1/1187.5)*RDS_SAMPLE_RATE
#define FILTER_SIZE 24
// when i say ratio 10, i mean 1187.5*10
#define RDS_SAMPLE_RATE 11875 // pira's m32 works at 361 khz, which is a ratio of 304, but this does a ratio of 10, while the m232 does a ratio of about 500
#define SAMPLES_PER_BIT 10 // (1/1187.5)*RDS_SAMPLE_RATE or RDS_SAMPLE_RATE/1187.5, to check you can do (1187.5*SAMPLES_PER_BIT)=(RDS_SAMPLE_RATE)
#define FILTER_SIZE 40
#define SAMPLE_BUFFER_SIZE (SAMPLES_PER_BIT + FILTER_SIZE)
#define RT_LENGTH 64