If we were going to do more with our sound device we would want to store Snd_pcm_hw_params_get_buffer_size( hw_params, &bufferSize ) If ((err = snd_pcm_hw_params (_soundDevice, hw_params)) < 0)Ĭout << "Init: cannot set parameters (" << snd_strerror (err) << ")" << endl Ĭout << "Audio device parameters have been set successfully." << endl Apply the hardware parameters that we've set. (" << snd_strerror (err) << ")" << endl Ĭout << "Init: sample rate does not match requested rate. If ((err = snd_pcm_hw_params_set_rate_near (_soundDevice, hw_params, &actualRate, 0)) < 0)Ĭout << "Init: cannot set sample rate to 44100. If ((err = snd_pcm_hw_params_set_channels (_soundDevice, hw_params, 2)) < 0)Ĭout << "Init: cannot set channel count (" << snd_strerror (err) << ")" << endl If ((err = snd_pcm_hw_params_set_format (_soundDevice, hw_params, SND_PCM_FORMAT_S16_LE)) < 0)Ĭout << "Init: cannot set sample format (" << snd_strerror (err) << ")" << endl If ((err = snd_pcm_hw_params_set_access (_soundDevice, hw_params, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0)Ĭout << "Init: cannot set access type (" << snd_strerror (err) << ")" << endl If ((err = snd_pcm_hw_params_any (_soundDevice, hw_params)) < 0)Ĭout << "Init: cannot initialize hardware parameter structure (" << snd_strerror (err) << ")" << endl Įrr = snd_pcm_hw_params_set_rate_resample(_soundDevice, hw_params, resample) Ĭout << "Init: Resampling setup failed for playback: " << snd_strerror(err) << endl If ((err = snd_pcm_hw_params_malloc (&hw_params)) < 0)Ĭout << "Init: cannot allocate hardware parameter structure (" << snd_strerror (err) << ")" << endl Allocate the hardware parameter structure. We're using one here to keep it simple.Įrr = snd_pcm_open( &_soundDevice, "plughw:0,0", SND_PCM_STREAM_PLAYBACK, 0 ) Įrr = snd_pcm_open (&_soundDevice, name, SND_PCM_STREAM_PLAYBACK, 0) Ĭout << "Init: cannot open audio device " << name << " (" << snd_strerror (err) << ")" << endl Ĭout << "Audio device opened successfully." << endl Globals are generally a bad idea in code. The code below is the simplest ALSA playback example I could find. I would be incredibly grateful if someone could show me the easiest method for playing two different calculated tones on left and right channels. I have successfully opened and closed an ALSA device thanks to this tutorial which complicates my fairly simple code tremendously but appears necessary for ALSA. The math of calculating a sinewave for a buffer is straightforward, but playing two frequencies on two channels via any standard libraries seems to be a very complicated process, and I can't come up with any relevant examples. The light-output is no problem using WiringPi, but any audio output seems to be a major hurdle. Newer Packs come with Wav.I am trying to build a brain device using EEG input and outputting light pulses and binaural beats in "close to real-time" on a Raspberry PI. ✓ MP3 + WAV - Use and edit in any audio or video editor.✓ 90+ hours of high-quality meditation music.Here's what you'll get in this all-encompassing bundle:.Royalty-free and with a generous license a layman understands for peace of mind and headache-free uses. These bonus packs offer the perfect sonic backdrops for those needing to maintain sharp focus or seeking a restful night's sleep.Ĩ5 + 41 bonus tracks and over 90 hours of playtime for a single purchase. That's not all! Tailor your audio journey with our bonus Pure Solfeggio and Binaural Beats Convenience Packs, equipping you with the tools to forge truly personalized and transformational soundscapes.Īs an added perk, we're also throwing in the LoFi Coding MEGA Pack and LoFi Sleep MEGA Pack. It's a diverse collection crafted to satisfy many mood and cater to all styles of meditations. Take advantage of this exclusive chance to get all our premium meditation music at the best value in one massive collection.Įngulf your customers in the realm of sublime sounds, ranging from the grounding vibes of Roots & Earth to the energizing Positive Flow tunes, tranquil Dreamscapes, and restorative rhythms of Ancient Healing, Reiki Healing or float into space with Cosmic Floating. BEST VALUE Galactic Bundle with Exclusive Meditation Music to Grow Your Business
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