add demo.py for all kws models (#2107)

sugarcase

2024-09-25 8cd8e25f180b57c74f1ae7fd39001e5af4c20f8b

 funasr/frontends/whisper_frontend.py

@@ -33,7 +33,7 @@
        self.win_length = N_FFT
        self.hop_length = HOP_LENGTH
        self.pad_samples = N_SAMPLES
        self.frame_shift = self.hop_length
        self.frame_shift = int(self.hop_length / self.fs * 1000)
        self.lfr_n = 1
        self.n_mels = n_mels
        if whisper_model == "large-v3" or whisper_model == "large":