init

lib_audio_dsp/test/drc/src/noise_gate.c

@@ -0,0 +1,53 @@
+// Copyright 2024-2025 XMOS LIMITED.
+// This Software is subject to the terms of the XMOS Public Licence: Version 1.
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+#include "dsp/adsp.h"
+
+FILE * _fopen(char * fname, char* mode) {
+  FILE * fp = fopen(fname, mode);
+  if (fp == NULL)
+  {
+    printf("Error opening a file\n");
+    exit(1);
+  }
+  return fp;
+}
+
+int main()
+{
+  FILE * in = _fopen("../sig_48k.bin", "rb");
+  FILE * out = _fopen("sig_out.bin", "wb");
+  FILE * ng_info = _fopen("info.bin", "rb");
+
+  fseek(in, 0, SEEK_END);
+  int in_len = ftell(in) / sizeof(int32_t);
+  fseek(in, 0, SEEK_SET);
+
+  int32_t th, at_al, re_al;
+
+  fread(&th, sizeof(int32_t), 1, ng_info);
+  fread(&at_al, sizeof(int32_t), 1, ng_info);
+  fread(&re_al, sizeof(int32_t), 1, ng_info);
+  fclose(ng_info);
+
+  noise_gate_t ng = (noise_gate_t){
+              (env_detector_t){at_al, re_al, (1 << (-SIG_EXP)) - 1}, th, INT32_MAX};
+
+  for (unsigned i = 0; i < in_len; i++)
+  {
+    int32_t samp = 0, samp_out = 0;
+    fread(&samp, sizeof(int32_t), 1, in);
+    //printf("%ld ", samp);
+    samp_out = adsp_noise_gate(&ng, samp);
+    //printf("%ld ", samp_out);
+    fwrite(&samp_out, sizeof(int32_t), 1, out);
+  }
+
+  fclose(in);
+  fclose(out);
+
+  return 0;
+}