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Diffstat (limited to 'octave/sample_clock_offset.m')
| -rw-r--r-- | octave/sample_clock_offset.m | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/octave/sample_clock_offset.m b/octave/sample_clock_offset.m new file mode 100644 index 0000000..5169178 --- /dev/null +++ b/octave/sample_clock_offset.m @@ -0,0 +1,21 @@ +% sample_clock_offset.m +% +% David Rowe June 2017 +% +% To simulate a sample clock offset we resample by a small amount +% using linear interpolation + +function rx = sample_clock_offset(tx, sample_clock_offset_ppm) + tin=1; + tout=1; + rx = zeros(1,length(tx)); + while tin < length(tx) + t1 = floor(tin); + t2 = ceil(tin); + f = tin - t1; + rx(tout) = (1-f)*tx(t1) + f*tx(t2); + tout += 1; + tin += 1+sample_clock_offset_ppm/1E6; + end +end + |