graycode: create smaller recording without sample rate spec

The graycode decoder can perfectly determine the direction and step
count from input which lacks a sample rate spec, only speed cannot get
determined. Create an example dump which lacks the samplerate spec.

diff --git a/graycode/synthetic/graycode-ramp-no-samplerate.sr b/graycode/synthetic/graycode-ramp-no-samplerate.sr
new file mode 100644 (file)
index 0000000..d9d89b6
Binary files /dev/null and b/graycode/synthetic/graycode-ramp-no-samplerate.sr differ