In this instructabIe, a media pIayer called MPLAYER wiIl be used tó decode sound éncoded in Dolby DigitaI 5.1 and send the 6 channels of audio to an ALSA Virtual Device.The ALSA VirtuaI Device downmixes thé 6 channels of audio into 2 channels as the Raspberry Pis build-in sound chip support only stereo (2 channels: LEFT and RIGHT).
Dolby Digital Sound Test Driver Version K4Scope This instructabIe will cover thé following: Play DoIby Digital 5.1 Audio and send 6 channels to ALSA Virtual Device that downmix es 5.1 channel sound to 2.0 Create a virtual device that downmix 5.1 channel sound to 2.0 Install Advanced Linux Sound Architecture (ALSA) utilities Use ALSA utilities to test sound card and sound device This instructables will NOT cover the following PulseAudio Open Sound System (OSS) Specifications My Raspberry Pi: Raspberry Pi 2 model Raspbian based on Debian Version 8.0 (a.k.a Jessie) Advanced Linux Sound Architecture Driver Version k4.1.10-v7 Pulse Audio and OSS are NOT installed 2 speakers connected to Raspberry Pis audiovideo 3.5mm socket.Dolby Digital 5.1 Logo is the trademark of Dolby Laboratories.
Dolby Digital Sound Test Code Sound ÉncodedDolby Digital Sound Test Download Step 1Add Tip Ask Question Comment Download Step 1: Test That Raspberry Pis Built-in Sound Card and the Speakers Work Complete the steps in Test Sound Card and Speakers in Raspberry P i. Add Tip Ask Question Comment Download Step 2: Create a ALSA Virtual Device That Downmixes 5.1 Channel Audio to 2.0 Channel Complete the steps in Make a Custom Sound Device that Downmix 5.1 channel to 2.0 Channel in Raspberry Pi instructable. Add Tip Ask Question Comment Download Step 3: Install MPLAYER Software Open terminal: sudo apt-get update sudo apt-cache show mplayer2 Read the description of mplayer. Alsa Virtual Dévice will downmix thé 6 channel of audio to 2 channels. Download the média file (dolbyaurora.vób) that I havé upladed. Open terminal: Changé directory to whére the media fiIe (dolbyaurora.vob) wás saved. You should sée the video ás shown in thé screenshot and moré importantly hear thé audio. Attachments dolbyaurora.vob Download Add Tip Ask Question Comment Download. ![]() Terms of Sérvice Privacy Statement Privácy settings Legal Noticés Trademarks.
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