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reduced audiorate from 48k to 38k (multiple of 2375) and changed fftlen accordingly

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Clemens Richter 8 years ago
parent
4b127c25e6
commit
e8dc869a94
2 changed files with 111 additions and 100 deletions
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  1. 6
      apps/fft-multi-decoder_fixed_hackrf.grc
  2. 205
      apps/ifft-RDS-decoder_hier-block.grc

6
apps/fft-multi-decoder_fixed_hackrf.grc
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@ -132,7 +132,7 @@
</param> </param>
<param> <param>
<key>value</key> <key>value</key>
<value>48000</value> <value>38000</value>
</param> </param>
</block> </block>
<block> <block>
@ -303,7 +303,7 @@
</param> </param>
<param> <param>
<key>value</key> <key>value</key>
<value>512*bb_decim</value> <value>1024</value>
</param> </param>
</block> </block>
<block> <block>
@ -357,7 +357,7 @@
</param> </param>
<param> <param>
<key>value</key> <key>value</key>
<value>1024*40</value> <value>1024*52</value>
</param> </param>
</block> </block>
<block> <block>

205
apps/ifft-RDS-decoder_hier-block.grc
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@ -132,7 +132,7 @@
</param> </param>
<param> <param>
<key>value</key> <key>value</key>
<value>48000</value> <value>38000</value>
</param> </param>
</block> </block>
<block> <block>
@ -147,7 +147,7 @@
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(519, 3)</value> <value>(359, 347)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -159,7 +159,7 @@
</param> </param>
<param> <param>
<key>value</key> <key>value</key>
<value>240000</value> <value>audio_rate*audio_decim</value>
</param> </param>
</block> </block>
<block> <block>
@ -197,11 +197,11 @@
</param> </param>
<param> <param>
<key>_enabled</key> <key>_enabled</key>
<value>True</value> <value>1</value>
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(646, 75)</value> <value>(247, 395)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -216,6 +216,33 @@
<value>audio_rate*audio_decim*bb_decim</value> <value>audio_rate*audio_decim*bb_decim</value>
</param> </param>
</block> </block>
<block>
<key>variable</key>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>_enabled</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(335, 419)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>chan_rate</value>
</param>
<param>
<key>value</key>
<value>int(600e3)</value>
</param>
</block>
<block> <block>
<key>variable</key> <key>variable</key>
<param> <param>
@ -267,7 +294,7 @@
</param> </param>
<param> <param>
<key>_coordinate</key> <key>_coordinate</key>
<value>(327, 155)</value> <value>(359, 155)</value>
</param> </param>
<param> <param>
<key>_rotation</key> <key>_rotation</key>
@ -287,7 +314,7 @@
</param> </param>
<param> <param>
<key>quad_rate</key> <key>quad_rate</key>
<value>chan_rate</value> <value>2*baseband_rate</value>
</param> </param>
</block> </block>
<block> <block>
@ -859,7 +886,7 @@
</param> </param>
<param> <param>
<key>value</key> <key>value</key>
<value>512*2</value> <value>512</value>
</param> </param>
</block> </block>
<block> <block>
@ -1305,7 +1332,7 @@
</param> </param>
<param> <param>
<key>omega</key> <key>omega</key>
<value>48000 / 2375.0</value> <value>audio_rate / 2375.0</value>
</param> </param>
<param> <param>
<key>theta</key> <key>theta</key>
@ -2044,81 +2071,6 @@
<value>3.14/150.0</value> <value>3.14/150.0</value>
</param> </param>
</block> </block>
<block>
<key>low_pass_filter</key>
<param>
<key>beta</key>
<value>6.76</value>
</param>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value></value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>cutoff_freq</key>
<value>90e3</value>
</param>
<param>
<key>decim</key>
<value>1</value>
</param>
<param>
<key>_enabled</key>
<value>2</value>
</param>
<param>
<key>type</key>
<value>fir_filter_ccf</value>
</param>
<param>
<key>_coordinate</key>
<value>(159, 111)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>gain</key>
<value>1</value>
</param>
<param>
<key>id</key>
<value>low_pass_filter_0</value>
</param>
<param>
<key>interp</key>
<value>1</value>
</param>
<param>
<key>maxoutbuf</key>
<value>0</value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>samp_rate</key>
<value>chan_rate</value>
</param>
<param>
<key>width</key>
<value>30e3</value>
</param>
<param>
<key>win</key>
<value>firdes.WIN_HAMMING</value>
</param>
</block>
<block> <block>
<key>multirds_pilot_SNR</key> <key>multirds_pilot_SNR</key>
<param> <param>
@ -2942,6 +2894,65 @@
<value>fft_len</value> <value>fft_len</value>
</param> </param>
</block> </block>
<block>
<key>rational_resampler_xxx</key>
<param>
<key>alias</key>
<value></value>
</param>
<param>
<key>comment</key>
<value>firdes.low_pass(1.0,chan_rate,250e3,50e3,firdes.WIN_HAMMING)</value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>decim</key>
<value>chan_rate/120000</value>
</param>
<param>
<key>_enabled</key>
<value>2</value>
</param>
<param>
<key>fbw</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(167, 135)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
<param>
<key>id</key>
<value>rational_resampler_xxx_0</value>
</param>
<param>
<key>interp</key>
<value>baseband_rate*2/120000</value>
</param>
<param>
<key>maxoutbuf</key>
<value>0</value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>taps</key>
<value></value>
</param>
<param>
<key>type</key>
<value>ccc</value>
</param>
</block>
<block> <block>
<key>root_raised_cosine_filter</key> <key>root_raised_cosine_filter</key>
<param> <param>
@ -3367,7 +3378,7 @@
</connection> </connection>
<connection> <connection>
<source_block_id>blocks_vector_to_stream_0_0_1</source_block_id> <source_block_id>blocks_vector_to_stream_0_0_1</source_block_id>
<sink_block_id>low_pass_filter_0</sink_block_id> <sink_block_id>rational_resampler_xxx_0</sink_block_id>
<source_key>0</source_key> <source_key>0</source_key>
<sink_key>0</sink_key> <sink_key>0</sink_key>
</connection> </connection>
@ -3497,18 +3508,6 @@
<source_key>0</source_key> <source_key>0</source_key>
<sink_key>0</sink_key> <sink_key>0</sink_key>
</connection> </connection>
<connection>
<source_block_id>low_pass_filter_0</source_block_id>
<sink_block_id>analog_wfm_rcv_0_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>low_pass_filter_0</source_block_id>
<sink_block_id>pad_sink_0_1</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection> <connection>
<source_block_id>multirds_pilot_SNR_0</source_block_id> <source_block_id>multirds_pilot_SNR_0</source_block_id>
<sink_block_id>pad_sink_0_0</sink_block_id> <sink_block_id>pad_sink_0_0</sink_block_id>
@ -3605,6 +3604,18 @@
<source_key>0</source_key> <source_key>0</source_key>
<sink_key>0</sink_key> <sink_key>0</sink_key>
</connection> </connection>
<connection>
<source_block_id>rational_resampler_xxx_0</source_block_id>
<sink_block_id>analog_wfm_rcv_0_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>rational_resampler_xxx_0</source_block_id>
<sink_block_id>pad_sink_0_1</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection> <connection>
<source_block_id>root_raised_cosine_filter_0</source_block_id> <source_block_id>root_raised_cosine_filter_0</source_block_id>
<sink_block_id>digital_mpsk_receiver_cc_0</sink_block_id> <sink_block_id>digital_mpsk_receiver_cc_0</sink_block_id>

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