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Searched refs:frequency (Results 1 – 25 of 25) sorted by relevance

/AliOS-Things-master/solutions/eduk1_demo/k1_apps/kws/beeper/
A Dbeeper.c10 void beeper_start(uint16_t port, uint16_t frequency, uint16_t duration) in beeper_start() argument
20 if (frequency > 0) { in beeper_start()
21 ret = ioctl(fd, IOC_PWM_FREQ, (unsigned long)frequency); in beeper_start()
28 if (frequency > 0 && duration > 0) { in beeper_start()
A Dbeeper.h8 void beeper_start(uint16_t port, uint16_t frequency, uint16_t duration);
/AliOS-Things-master/components/ai_agent/src/engine/tflite-micro/tensorflow/lite/experimental/microfrontend/lib/
A Dfilterbank_util.c180 int frequency = actual_channel_starts[chan]; in FilterbankPopulateState() local
183 frequency - state->channel_frequency_starts[chan]; in FilterbankPopulateState()
188 for (j = 0; j < num_frequencies; ++j, ++frequency) { in FilterbankPopulateState()
190 (center_mel_freqs[chan] - FreqToMel(frequency * hz_per_sbin)) / in FilterbankPopulateState()
198 if (frequency > state->end_index) { in FilterbankPopulateState()
199 state->end_index = frequency; in FilterbankPopulateState()
/AliOS-Things-master/components/SDL2/src/timer/windows/
A DSDL_systimer.c160 LARGE_INTEGER frequency; in SDL_GetPerformanceFrequency() local
162 if (!QueryPerformanceFrequency(&frequency)) { in SDL_GetPerformanceFrequency()
165 return frequency.QuadPart; in SDL_GetPerformanceFrequency()
/AliOS-Things-master/solutions/eduk1_demo/k1_apps/musicbox/
A Dmusicbox.c129 void tone(uint16_t port, uint16_t frequency, uint16_t duration) in tone() argument
139 if (frequency > 0) { in tone()
140 ret = ioctl(fd, IOC_PWM_FREQ, (unsigned long)frequency); in tone()
147 if (frequency > 0 && duration > 0) { in tone()
A Dmusicbox.md53 void tone(uint16_t port, uint16_t frequency, uint16_t duration)
55 pwm_dev_t pwm = {port, {0.5, frequency}, NULL}; // 设定pwm 频率为设定频率
56 if (frequency > 0) // 频率值合法才会初始化pwm
65 if (frequency > 0 && duration > 0) // 如果设定了 duration，则在该延时后停止播放
116 我们的tone方法有两个需要关注的参数：frequency决定了播放的音调，duration决定了该音调播放的时长，也就是节拍。因此我们在读简谱时，也需要关注这两个参数。
166 了解了音符和八度后，我们可以开始填写音调数组，这个数组里的每个元素对应 tone 方法的 frequency 参数。
/AliOS-Things-master/components/SDL2/src/audio/sun/
A DSDL_sunaudio.h42 int frequency; /* The audio frequency in KHz */ member
A DSDL_sunaudio.c94 sleepy = ((left - this->hidden->fragsize) / this->hidden->frequency); in SUNAUDIO_WaitDevice()
313 this->hidden->frequency = 8; in SUNAUDIO_OpenDevice()
321 this->hidden->frequency = this->spec.freq / 1000; in SUNAUDIO_OpenDevice()
/AliOS-Things-master/solutions/tflite_micro_speech_demo/micro_speech/train/
A DREADME.md133 frequency information, each taken from a different time window.
135 The recipe for creating the spectrogram data is that each frequency slice is
141 averaged together, giving a total of 43 frequency buckets in the final slice.
145 Each adjacent frequency entry is stored in ascending memory order (frequency
146 bucket 0 at data[0], bucket 1 at data[1], etc). The window for the frequency
/AliOS-Things-master/components/SDL2/src/video/x11/
A Dedid-parse.c318 if (get_bit (byte, j) && established[i][j].frequency != 0) in decode_established_timings()
350 info->standard[i].frequency = get_bits (second, 0, 5) + 60; in decode_standard_timings()
675 if (timing->frequency == 0) in dump_monitor_info()
679 timing->width, timing->height, timing->frequency); in dump_monitor_info()
688 if (timing->frequency == 0) in dump_monitor_info()
692 timing->width, timing->height, timing->frequency); in dump_monitor_info()
A Dedid.h39 int frequency; member
/AliOS-Things-master/solutions/lora_p2p_demo/
A Dsx126x-board.h153 bool SX126xCheckRfFrequency( uint32_t frequency );
A Dradio.h256 bool ( *CheckRfFrequency )( uint32_t frequency );
A Dsx126x.c456 void SX126xSetRfFrequency( uint32_t frequency ) in SX126xSetRfFrequency() argument
463 SX126xCalibrateImage( frequency ); in SX126xSetRfFrequency()
467 freq = ( uint32_t )( ( double )frequency / ( double )FREQ_STEP ); in SX126xSetRfFrequency()
A Dsx126x-haas.c378 bool SX126xCheckRfFrequency( uint32_t frequency ) in SX126xCheckRfFrequency() argument
A Dradio.c181 bool RadioCheckRfFrequency( uint32_t frequency );
857 bool RadioCheckRfFrequency( uint32_t frequency ) in RadioCheckRfFrequency() argument
A Dsx126x.h1026 void SX126xSetRfFrequency( uint32_t frequency );
/AliOS-Things-master/components/SDL2/src/audio/
A DSDL_wave.h55 Uint32 frequency; /* Sampling rate in Hz. */ member
A DSDL_wave.c225 …SDL_LogDebug(SDL_LOG_CATEGORY_AUDIO, fmtstr, waveformat, format->frequency, wavechannel, format->b… in WaveDebugLogFormat()
268 … fmtstr1, rifflen, fmtlen, format->formattag, format->channels, format->frequency, format->byterat… in WaveDebugDumpFormat()
1636 format->frequency = SDL_ReadLE32(fmtsrc); in WaveReadFormat()
1692 if (format->frequency == 0) { in WaveCheckFormat()
1694 } else if (format->frequency > INT_MAX) { in WaveCheckFormat()
2050 spec->freq = format->frequency; in WaveLoad()
/AliOS-Things-master/components/SDL2/src/image/external/libpng-1.6.37/
A Dpngwutil.c1216 png_save_uint_16(entrybuf + 4, ep->frequency); in png_write_sPLT()
1225 png_save_uint_16(entrybuf + 8, ep->frequency); in png_write_sPLT()
1240 png_save_uint_16(entrybuf + 4, ep[i].frequency); in png_write_sPLT()
1249 png_save_uint_16(entrybuf + 8, ep[i].frequency); in png_write_sPLT()
A Dpngrutil.c1778 pp->frequency = png_get_uint_16(entry_start); entry_start += 2; in png_handle_sPLT()
1802 pp[i].frequency = png_get_uint_16(entry_start); entry_start += 2; in png_handle_sPLT()
A Dpng.h522 png_uint_16 frequency; member
/AliOS-Things-master/components/ble_mesh/bt_mesh/
A DKconfig464 int "Minimum frequency that the RPL gets updated in storage"
/AliOS-Things-master/components/SDL2/src/image/VisualC/external/include/
A Dpng.h522 png_uint_16 frequency; member
/AliOS-Things-master/components/SDL2/src/image/external/jpeg-9b/
A Dstructure.txt22 A "coefficient" is a frequency coefficient (a DCT transform output number).

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