Add new pre calculated DSP table for 7k, 14k, 21k, 28k offsets

dsp.c

@@ -41,6 +41,22 @@ void generate_DSP_Table(int offset){
     v+=step;
   }
 }
+#elif FREQUENCY_OFFSET==7000*(AUDIO_ADC_FREQ/AUDIO_SAMPLES_COUNT/1000)
+// static Table for 28kHz IF and 192kHz ADC (or 7kHz IF and 48kHz ADC) audio ADC
+static const int16_t sincos_tbl[48][2] = {
+  { 14493, 29389}, { 32138,  6393}, { 24636,-21605}, { -2143,-32698},
+  {-27246,-18205}, {-31029, 10533}, {-10533, 31029}, { 18205, 27246},
+  { 32698,  2143}, { 21605,-24636}, { -6393,-32138}, {-29389,-14493},
+  {-29389, 14493}, { -6393, 32138}, { 21605, 24636}, { 32698, -2143},
+  { 18205,-27246}, {-10533,-31029}, {-31029,-10533}, {-27246, 18205},
+  { -2143, 32698}, { 24636, 21605}, { 32138, -6393}, { 14493,-29389},
+  {-14493,-29389}, {-32138, -6393}, {-24636, 21605}, {  2143, 32698},
+  { 27246, 18205}, { 31029,-10533}, { 10533,-31029}, {-18205,-27246},
+  {-32698, -2143}, {-21605, 24636}, {  6393, 32138}, { 29389, 14493},
+  { 29389,-14493}, {  6393,-32138}, {-21605,-24636}, {-32698,  2143},
+  {-18205, 27246}, { 10533, 31029}, { 31029, 10533}, { 27246,-18205},
+  {  2143,-32698}, {-24636,-21605}, {-32138,  6393}, {-14493, 29389}
+};
 #elif FREQUENCY_OFFSET==6000*(AUDIO_ADC_FREQ/AUDIO_SAMPLES_COUNT/1000)
 // static Table for 12kHz IF and 96kHz ADC (or 6kHz IF and 48kHz ADC) audio ADC
 static const int16_t sincos_tbl[48][2] = {