C4FM modulation + DSD

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C4FMContinuous 4-Level Frequency Modulation modulation + DSD
Mode NFMNarrowband Frequency Modulation
Modulation C4FMContinuous 4-Level Frequency Modulation
Short Description Hello, I'm attempting to decode local police communication with GQRX and DSD. DSD is receiving the audio from GQRX fine, however it reports many errors when decoding. Comparing what I capture from my SDR from other examples on the internet, it seems the speed of the transmission I receive is slower than normal. I want to say the baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. rate of the local police transmission is lower than normal. I could be wrong on that as I am new to this. Any help/tips would be appreciated. Thanks.
I/Q Raw Recording
Audio Sample

Identified as P25 Phase I CAI, see discussion page.