# 音频用例

Source: [https://docs.qualcomm.com/doc/80-70017-50SC/topic/audio-use-cases.html](https://docs.qualcomm.com/doc/80-70017-50SC/topic/audio-use-cases.html)

用于音频的 GStreamer pipeline 演示了从文件源采集音频和在扬声器上播放音频流的各种用例。

在运行用例之前，请确保完成[多媒体用例](https://docs.qualcomm.com/doc/80-70017-50SC/topic/multimedia-use-cases.html)中提到的先决条件。

## （仅）音频采集

Source: [https://docs.qualcomm.com/doc/80-70017-50SC/topic/audio-use-cases.html](https://docs.qualcomm.com/doc/80-70017-50SC/topic/audio-use-cases.html)

pipeline 展示了如何捕获 PCM 音频流并将其存储在文件中。

### 单个 PCM 采集

在 SSH shell 中运行以下命令：

    gst-launch-1.0 -v pulsesrc volume=10 ! audioconvert ! wavenc ! filesink location=/opt/<Audio_PCM>.wavCopy to clipboard

如需停止用例，可按下 CTRL + C。

Figure : 使用 PCM 编码进行音频捕获的 pipeline
                
                ![](data:image/png;base64,UklGRvwIAABXRUJQVlA4TO8IAAAv3QQhEAfkMADbtLGlMRy4/29Ag/SG40aSFKmadg/f57+R2FQO2kaSJB9/kkfi7+4qM23bGHah9txZFguz//8NNdt4sYzptXvM8lbX6hpieGPnaMIoszQxc3ZDvQyq/jqHJnbOMrxRObTHJBhV4///M8uozqE502s21Kd77J4glX9Tw0So7fP9vBk1cz7vt0DtnMrRNYwK0rXM6F5meUNzppfBP/808X6/BKpraUKMrmH0ApZ4NGivfWaTLbYenq9ikAIPYKQCg0EK50fRgYEgBBiXJ3RO90LAAAoPThfgnO6kAi8oqTA4XjhcYUAjlcPB4Sw4MNKBkQIUOHAoitu2caT9x05yvXwjYgI4rY1Y77SgmadY37LJxg5FBwjYS2eCYiPgqNiVV18qwba2NHBSG3d3d3d3n/yVXcz+1xB+4YecwJnSEtF/SGwkSVJcHL27HIWKru2B3kF8JVrbnrbN+R3f0W5EtVJmylLyQgst0GuXvv//VPrHW0T/IbFt5EhSX+zdu/O2OkzE/f9A0ha/IXmLImGL7L/sv+y/7L9/ZQzu3wDA49GwlMwLAFxtDCH9LyBEOcrZRckImY8BzJOUthhtz3CS4Oi/ABr3o1QPl8xBuwNcHLVLTIZpjyWAEq31BrZfALaYBggHfejdAW5Rp+S6JQ7eW+cPEwPbJkmJSTvVQfrf/RC7UJyny8B5rutuOYFjqcpLBlsJj/6XqiXyWdy2o/5HVno0B3eqxLdE5qokB7M4FNMg/U9omk6dSN7mzFXJDXFByHbNLat0Cj8vaErmA6Y4SPc7sV5KHg15sVQd/sranqtkPplsg+/lkw+Erozsryos0I0n5cZku2Pd2+bLkKHWTQVrZkTnRFGLwj8JG8gyLsldUt5nV24MucBuv5stLAg/RQzWzIjOieJA9Lx4QSDLuEtw+4SZX10M7tOtxUMuwf2sBfTx3jqxYM2MyJwon0iWLNHonkY3lfPuLkyYjXoynMZJwsLl1S2nFenQ+AycfiC0OhTRtWlygyzmdEhH3HKBfZCEiNmsnOBAazwbu9IDJ5wyG/VEdHF6kq7QvqENs12uRvQLgsVkhcNXS1AhB8p8J/V7wTxZktrA/e9tiHvGWk75M4q4fpNy1FKxlOYopgAAnVeue/kGEHJeufvZdpPMi8sP1DL1YrqxrZbTZIXDcwKXa0ukDfacsicKdrqLGLYKG7oqVeHq7zmUlyvtVeujbbBn5wolU727Q1frfYVCsZSycENl9l/2X/Zf9l/2X/Zf9l/23//rzWx2xKfx45Go1Xs385liAV43O6ITwPFIzAK4m4kyx3V1+V0GzKAGdp6lh+p+DDCDmGUGNXBTi7R5nDiYLXaJ4RD7OQIPIhMexCs88O1K5GcZOqiDVytv/ep8hA5iFR34NZRVeOUJJ8KcN0I8ADCDxnfeGHEHwAyaXuPFnU/NTNr4g0sDRdNrpniPXO/x4Uo6+/e1yPJWpdgrOFjV3K9FBdMpqnEwQliZV91Byq2jTU7fgPFGiG3un3Dt1bie1yLV8pzLyhyNcqtfkOpmYNkyxdiR9Eu4Xohs+xCiulT9VXqmcVPyk8BRmnKNjRGrzKzf6wLwdrCGDnUMy7xlgcpMMuVBuSBU1eMol1WwqlU9BifG19Tk6Fk2p55QrQXHZiGQActYddxccj+2IwGbhWR2FipN63Q1M1KVcSBSKss0IxpuyxRDIiFPKpK5jN/JKtgBtWQD/6qZWe/rqOYOxd6JtKi3BfOlgl5ikikPCbaqtaLpMYRQUwW8r0L0BJHxSTyapbYrZQhrQDMQNcVuzlPbLVJAGulKpLpFQ1VfpfEZZmQoipUW0iyrs8eAn1udxuamVmhbSclZtsXEkEjYCyYp9TClUJMEThrMuJLs6FOYWe8BsxTEkb8KqNIyrykQNVmgPCDYqtbggkbZYzCppoh694VWteq0DFiQdRRj+YY0JJLeL8E/oI8g+AwZaeAo1jsGnLuChYlkaZmYgkjS6nlELd2Y3TZuZHcUMus9sWdL0QKIeUWBuEk2JgKCVLV2VD0Gs5sl6X0avKneM2aKYqrbYLa9zrsKOpKVJDOUqXGe32eqkZsy6uWEgWZK1E2t6dgWg5FKvaNllYgaB8megma9p3kv1GQ6lNbs168giJtkYyIgUFVrSNVjCJsu9bnO7+5gBCgjXtWSj//eqjxG6ewZkQzUcuw7I9XIhYP7ORwM4cA0RzGmPoxoi6GRCCoLZODGvaWrmvVeZXupqVNNqsj9umeb1xaoZMkLkNaqqrVk32NU4JChu8SDAXbfcaDYkWw+mv571gF1LP0t6b0O6jdBFu/xNzNMO9Ul1nf28gxrm5cK5MBHkM5NUlOqHqPxtZbWV1SbX49EZMoGMYlEPoTPncjkPGQ97/wD7MHhXhw1Hlz5Gcc17Jb1rmRqmH8NQSUf4omqxyi08U6qS1errRYd4l7/1DDCItnVoQPH9D5GNbykQ4yQjX/PSVPpQ/Z5Bz+gzL+OoJLqiKLqMVaMsKnKD0jLtDGB8+idaOCpxrDXawL0TzOShv9YiBhTmT4ByGThGS6qLt6ZcpkYFkmgon1BncR4gKVH10rjurok5pUFYjDl8cO+x+jgj/uCVP2AFyxB+0xDPBiIQW7uzXniupapfaGS9FgkhF5nF7AXm9N8PL1Oekpkyeo0q3uL6+xEam6GXsqMC0Wehu8hcShamawCMa8sEIONieih6zEKamvCFbAY2z1QhmwVgILj+Mi6vp9EsmAfIxGoq+32FukxWZbJbf0G90jIIBWOf2acLfIQOsT3DlQ7VX+gZeZ1BaIm2ZiIHqoeo9Tk7TNP6FyMahF9x9/NWmRzS9rpAG5s2/ZDtO55W6aYJJIF+/jWcIlH88S3x900+TFZOlT1uPsG97faaWYwZ1Ljwl3Y9w9zzxd3aYl5XYG4SXJ/a/xQ9RgN1UWmrrD3J8p/q/nvPwmAGGP87z///Sf7L/sv+y/7L/sv++8vj2aPBMJ1w3tqBsG5k4rZUkZoVW3FZgTlTip2SxmlVbWTkkX2X/bfv4CSt/iVtvkJAA==)

### 单个 FLAC 采集

在 SSH shell 中运行以下命令：

    gst-launch-1.0 -v pulsesrc volume=10 ! audioconvert ! flacenc ! filesink location=/opt/<flac_file>.flacCopy to clipboard

如需停止用例，可按下 CTRL + C。

Figure : 使用 FLAC 编码进行音频捕获的 pipeline
                
                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C2UIg1TZbpmESB917YNE07DZFlpGijhcrayXej25DWht1qia2k41oa4vFkb8qwWmjRjceTuU7DZnknHjfynbag3XDdbq0z6bpYV+hHCNHZMkoo3nqqvvlFD/Q8/orAAK0jheF4PD5MWwBldiwrRYvoYnH9LJKd+7FcEl1rmk6i3VvuRhdjrNrOFbrRff4kXeEEnTyNXeliI61GI1+2EYs0hk6eZeNxd0ZrASOtLTdANz5MYy5CUGfLKKR8/tgTg20nWSK0FwQI+ZzjEkeGC10Yj2NK68Ysy2ddFxtZ8TkFce25V9OzrKCd0yqWixfSMbnxVNBUtwu6rr75tatCwhMhviDAeOVwJY7DUtlCvkFs/eHPdyv0h914vJ9HALpEjI2hC2ltWDD0nL1aTDxZUSbRBKzQSmDZghY7nrXQQrs3N7w4QXd3di/tdnK0cX/WQAsEMwgYoxUXwATDAlV5v7ut7Sj3/ODe7wawwMh2/20/HzLkQJKt7sUiIpDcSRpBBMwW0jh2uBGJzj7/8bQLTUB7a85w8mUDAavpJGJEq3atVS34cXdYS3d3d//t8c5Cg5HOGQhYpBEwFf1+N1teb11xknk+CzUjn0siwbLAFjrZpRXdSTrpku2/ml6YFcIMl/Ngl/MWAk7SardaOp4oqNvHV7yLDz2QmIQX2gsCnDw8iTLcarpX2vox2lvd/RxAyyRpKUTAy7V+QT5N68QfxTGxSGMYEPG0hKfGbDfLqKSKONNJqTZUeQ4STGxnw2KfTARV+TTanlbxkK4HB62xIY1SSgO4Hz1imYBZqQgtIgDauRxMamNkZ90KrYiMNHOcfI70YYhJPmQltS7LLVJJacloeuuGUsqVZt3hYg8jPl268WB2ukwppazoNmr9kvbHqKTKhl3utEzAmCAmHQ+qmj498wpGLMmNbZJKqtcwYgVKC+1FC2WYJqlMNZp2lM7aSgJ07ZnKEKVpx9Y6x4pCzcw0oOvMVKc0ms8K+mUAIoKqfFacE9t+BMe0YrQ3VixerW2wMdJWQbXYWcKHBcWEb2bZCq0gFukL+ovFYv/M8JWGOujTM8zP6Lq+EWVzNDVWXGowpImKxAITXU62dz+5I0GOR/X06b4vLsmNT6b1FmK2GOuktM6SAqleNtZIG9FUmIoL5GP1igDQKEsYNrhoJIfofqM3Z8TRdcEAYzEHuGjZLXTMJUiOoGEbaqJPJzbkCg6g3ZtPohuPMkEdISseKaSjCG73YYkKbXTFHMSRaURAy76ySFOIxG1LVB5W08pQOYs4rA2hi64bNVBGDBVM7l+Y3njcCP0wC934ikpo0a3QmIuAUfvKajodd9F1DQOTcmTG46icPmISG98YrXPJ1kODjS46+8uFBgyskAajUxtGUJYW23WT5UISH09b0DUiNC+K4Ri9k+XGLQE20ssN183myg3Hz5mky3DjeERGlue7XddKaf0IqrKddV9f8JLamiBG3HUqVBChk65rd1HiV6rRtV9AJb+SLJS70XVa6NVolwsz6OKdaLWT58PoXvlR9POxQZ6dy7HL0URniFbAdftZ2pLop9OIoPSvTdiYliq4l9Mx18Xul2tFTBZy+13XatGK9lZeRBcr2hG0ZciNp4Km6n1twrkAPmcrf7yk9dO0Gt14MhckA4e1vI2gJBrNNTaWaQXRzmntkXRZyz8Hx2gEnU6aikSGaMrBhjRNXxop00k0UnQoElndgq4JYuOkAEys0ELjpSk6ZKiLvg1h7KVDkcY0FbjHGWtszPfSlIHDBa29MX9Y5oIqtFAXSdOUgVjkvO7SLpq33X6utV86RF/uoJ0riyrEUySoo1o/AmB3mXZdOs14PxqdZdFxxuqG0VRfW8uCvXQYh3lhOnJhgQpwTCtMX5oSm97PtPZLjxzu7cZkQUp2PAibJlQqQsdQtvXHxQSRPI0hpA7vlzpCBSxtIEZoykJQ0k5Xl0Zz1WCa2J2mNL2/s9PGIo8BJqcLlBZiDgI6jQVK80XLRDtSppRN24gVNoMgJH98XkwnLh5VNALotGtUG6r0pgy0inmqtQwXugzE42uCUDpUXThiYYTPoIn9nRplMQPBxOG0RlljEgH3pzWqTTuIDZ15YodX0ATsZ50Owghgdi+ndOg4ojGUF10Z0WhMjb08L6hj+xGLZUrLsQtZPzEJSgsRGwGPD2lU68oi2lvTog/jYyg7npFNkgqrIO7n05JNP2RaD7h/L6d0a7WF0FI4jt2FLtGd2AwmyymBk+aPV5bK8w3HID8dGHUcCw0DwHKiAAiG4xiAMCKJgKZsGIg6lklEl6ZTSWIPHccg22ui4RiAjiSCYxERDMcCsZ2GYyACMQ9JZ020DLLpIMYeEecjBpNsgkfmciw0pbkQHDGZyhohmmYS7ScXFVqOBXILLJj2Rh0LZMezKSK2NgpgOQZxfZNtvSSBQQzBsYhoQkzDscihABoNBijrbIE+u28impLtGGQ/3m5KwsmFAUnYEWk6lSTXOcktBKJJRgBpGkA0A7VTtv/SBCCTFchgIPt3kuSS5lBf5JIi22+idDJBtl86sgC5NlEQEYg2S5oMMk02JddJYlLEJAJHQGWJoQmShEBuVia/sSGMBL9RXsBIKilgeyUNlm2yJEYImi6JLZ8imKlIk6ksSdNkpiGZzIa2Xz7XpohcawECNDm4tRZUBEWdrdhbQTOM/IXAABbASBjZiCkcDisbgbDzP6azxX9b/LfFf1uaoTZ1bZjHadRbAHma2tQ33luR/lWFbkyfpligPnXtt3200l0L6lM3hLcBxnc+QH1qFqxPGFWe36uiyi2R3Ft1ah6OrrlemR5wbxWqKgRK33mVGk0i2J0+ne1ZYqOPf4wKVdtJTXHmSu8T6lWoPuG1itSmTgP4C2WbUKdJXBUMSQp1Kl6bUda6uePhD/vjb3+iCtW3rwoJzyhOhl/zxGX1hhoNYBf71D7FyvD/ukyVluQv8kxA0hjqVBmlXX90liipUnm1ClTrlVSpEkxXsFpPrZZksPp0tSrlPZZTq1tTXYHXGqZOJf4o+I+KLcnANhNK5W5MN0f6v/kwCb0vsDBxyQgbl+g+LyqFk+tF97moZsf14ePaUXPRLbaLvek+XxI+rvu8afZmeQ==)

## （仅）音频播放

Source: [https://docs.qualcomm.com/doc/80-70017-50SC/topic/audio-use-cases.html](https://docs.qualcomm.com/doc/80-70017-50SC/topic/audio-use-cases.html)

此 pipeline 显示了在扬声器上播放单个音频流的用例。

### 单张 PCM 播放

此 pipeline 显示从文件源获取并在扬声器上播放的单个 WAV 流。

Figure : WAV 流播放的 pipeline
                
                ![](data:image/png;base64,UklGRmwJAABXRUJQVlA4TGAJAAAv3QQhEAfkMADbtLGlMRy4/29Ag/SG40aSFKmadg/f57+R2FQO2kaSJB9/kkfi7+4qM23bGHah9txZFguz//8NNdt4sYzptXvM8lbX6hpieGPnaMIoszQxc3ZDvQyq/jqHJnbOMrxRObTHJBhV4///M8uozqE502s21Kd77J4glX9Tw0So7fP9vBk1cz7vt0DtnMrRNYwK0rXM6F5meUNzppfBP/808X6/BKpraUKMrmH0ApZ4NGivfWaTLbYenq9ikAIPYKQCg0EK50fRgYEgBBiXJ3RO90LAAAoPThfgnO6kAi8oqTA4XjhcYUAjlcPB4Sw4MNKBkQIUOHBAcfv/tG0UpR4zMzMzM2/RgVePuXjDXOlKV/rbpd/v+5OVnOTreeeI/suibdtKm3WTlJDXDuvcAyKa0d/fdalt/KZLb6NWYhuV/1T+U/lP5T8/y7DuzE2t9b3zG6QwD7XW14+uJ6x5qIXR2IQ4RcIIyTdrvYdFOg5Y/EBfLOGw5qrm484mzkoU5uwSD6BxfomETVjuYb/WDXKst/bEQ62Pgwaoz64mX671LdIpUbekA/N42QI71p6wISVs7LIOrP/dWQ8PFPfww8A9qOse9wId+00uGX28xMOah6Yl4hS3lpD+x470eAZ/mODHReyqUg7g4FCMwfqf0DS9clHi8W67qnSDeEAIu+Zxpzg1v29EltlvWMaBdb+LzoeS59e3hP3m5q/M4gcmzDwTJ3TYx7kwEDuN8K4KB/iFJ42j25Z4ZsUJ+2vIkNbNidbMKJwTJTeF8E/CRlLjfrlLCtfZkQ+t9wG8/G5XzQHhLGK0ZkbhnCgeyEI+QkEkNZ5ioOuEwV0X687wS4vX+0Tf2eUA+X6Pl1GiNTMK5kSZR2K/I3ys2EE+1Njj752t9kI9GRrjYokFn6sXXjJIN40va6/fiBwdivBj09IN7GAuH6wjHvcBfJCECLhYuYQDOcZz4ZT0wAmv2Av1RPjB6cXyCnk/0QV7uVwbwX8hva+0gsd/9msDu6GMO2lr34F3lpRtoP3v8Xr0Sll4CT+jiO9PaWxypLa/nENtu9aaPK/cigM3NYE9r9ydXUtsmIc+v9HC7eSZ6VxZeKm0gsfnBG4c3s/a4MpL8ImCvV5FrI/XXOCryir4+nsOjWsHl5jWx9vgypPXSRjz5R65fmR1LQe1/WUWgqGy8p/Kfyr/qfyn8p/Kfyr/qfzn/+vZeWxp8WTLhY2FllW3d86nsFc/Ora0cKL1hY1FFq1v7yxM9CZKNd8m9a4ss18XZ7RdKJzYhTbg6Zzqp9OhcGAX2grq1ndKt+QBolupIgBdKJjQheIKXShCDKqplG6YqMMXCiV8oR3wNlr92wUXvtBm+E4eRjrHVDP7J3MlCOOu1mAh+FwJxritNVgIPcEbt//dEKAResI0nhRcnsSPli/ZMZVKqzu/TitVH04zEEJN9tGTg1PPBlTHCx5t5H3L2RKEcQL9J1xXae33RAI1hWL0jCdK1Sc/EkP1LlZsqt+k6Hj5NeH2UEDsEgrG7n1rDMY4BGb96eVuuG39jhe4w70ZsmX9SVjdOYBUwMrHkfiv0DOh1Oxn2T/UCY3/IHOvGdR3oFWvwOqXTXNy1L4QiabEgiFv5tTM+4BBC5CMehfd6HQME2YmlOXpBEvTjMJqsORV4xdak1+UahI59jsNKC4DHot/UVOpndvTwBMOCF1CwYL7QK8Gs95ZpbT1ReBmVxxZBax8IRLlh6t/HJAbDzPQqldw9TuTo/ZxJIYgmEFep9LwvIMg22/mo9k+E2SzD5JdQOeAottR1fto2vpnliYGgCVfgEMQuleaSqkwK8XuXt+MGV90FgOv3bYa35lI1p4QkLuEgmX3YQbMenekrS9Bvm7qfdbZmzC4CuPng1UhVb4QiUoeMakHZf9QJzIe5k8BVv0iVb8buWpfiESRBFPYa8igh0M8Etnnom3fTboo/QH8bGEMYEs+wbNUcVV0/koOYf01WdrRTAjIHQqCJfdhhs36PEhbX+aLw4wXsjSlyneIpJp8xyf4xzpB9jDDrPpGqn43ctU+jMRlugk2r6NpFjTgRO42dW/3zX0p8MJmwqAajco3MkueNeJbuqODqgk9gMIj+ljvoBUMWokQELjEgkX3QcbM+rwqJU0SdLO7zPhRZBybFiORduHoX9RJnAYaYtU/YvU7IdR+jv7jtidk/JHY17Bhj4P4sFutO1H2pHEfgB3JxISNZsk7xJSRYtaYFdZDv+XV1/GEnqRiNUwnLIcFgAEhWLDoPsQsX55fJdYkQ9qcCGh9NCKufDESRPIv6ww4i4zV1gH0OCHUvnv/yYVNOBVaslcDtPSHU0x/TGiRRqOn3kXXd7ywHZafnqewWiOFJ8MCimDBLSaUKrmmVtLvA8l/RKjV2hWh9nP1nzz8lahmAOmXw/UMKaVGhTfxx37G24TcVOjvVqP0ftuRjymapINqlNxwk4EBOaJgcZ5HCUFTm75x8i/qLCAItZ+r/+SgaYqp3hW+1aNO+eyVZHh1AaBbjX6zzr6QLwAGOaToXpsIDmdaWECMLNi6jxxUUzuvdvVvdUYfoMcJqfZz9R+IQ3WYVWED9H1buWhrf+HIXxZvzEenWTVN17vY3OR3XTEpfxJPQv01cUCEJFhwHydETaiSvyh+NyFPAaYDdCdVvhQJIvsXdEYZB3OS21y1DyPlg3550MCXMJHdN7nYJutJQB2K19nFm2zQngchDqwNYui9PUWf2NWsXlUzoxhPKb2mDAdECIIl93F6I2oiM3M0zV4NKDbH1dR7m6IV19lhRP+STmEWjaaxw6H6oWlArtqXIuWANemwkb1xu/zcVCACP0Yi4nxRapT9gGaGDVlYkHoXg416lxiQuZQEC+7jtNpJ0xdFxqBphUjUbNKCx0hgRP+STjiLBontOALMQdPgiC9X7QuRctJpe3bAQI9rm3xPkr0ij2ub/ZxmCPj41kgj3PLt5nP2zbjh7+/P5xidY0YTo+PTUGKvKJcCckTBgvs44aapd1qpmT7bCnmo+vfnLXh8K0b0L+nEPJ2IHw7VD00Dt7lqX4iUBzYdR9uGYvhEaO2ukfNi/uqv1YSn+rMsyyr/+U+CstvfwK/8p/Kfyn8q/6n8p/Kfyn+qoAn7KEFwI/DcDwPR2UkVWZUF1KorRXNEZSdVdFUWUqtulMlG5T+V//wMSOlt/Fpu4xc=)

在 SSH shell 中运行以下命令：

    gst-launch-1.0 -e filesrc location=/opt/<wav_file>.wav ! wavparse ! audioconvert ! pulsesink volume=10Copy to clipboard

如需停止用例，可按下 CTRL + C。

### 单次 MP2/MP3 播放

此 pipeline 显示从文件源获取并在扬声器上播放的单个 MP2 流。

Figure : MP2/MP3 流播放 pipeline
                
                ![](data:image/png;base64,UklGRjIKAABXRUJQVlA4TCUKAAAv3QQhEAfkIADbtrHltvsAx59Dn2SLhuNGkhSpmo7hef4biU3loI0kR/LxJ3koPkxqM23bGHah9txZFgszf/3aNN14sTT16F1meIM1WG14vKdnzRwjzJg5mtV7pofBXYXZZk7Pah7vMYM1ZpdJ8NzVrn8xwwhmm1nqoT3Ti916V5A7i6qZDKJ7HZ8PIzRrf38Eomfd2VjNiCCsYR72MMN7ZpZ6GFxZZo6qXVkCwRrqwWpGLmCJp0H775tOuuh6/F5RQQp1AEYFFaTwuEU5MBCEAON5p5ztGghSgAOlDmwnnk9SgUc5FawnljNQ0igjleXAcgw4MNKBkQIUOHBAcfs/tW3j81RmZmZIyswMuYETlZKFYU3BTik0B/72u9/v9z2BT2qqTRH9lwVJct02c5ED068F9g4kIVL6/0sX2uJPXXiLSoEtSv8p/af0n9J//ivDlov3tNaPr2xDYp5rre+c2UrY9FyD6NghcZ6IAcp3an2YSWoTWPlUXyvgsOmW5vFwB2e9JObSqhiQ4soqhFVY7OGY1h3kWG9z+3Ot24QJUF/aSH5c6/tkppRmSxoyL9css7G53YpEWNlFHdj893CreKB4mB8GHpZm3bZYoHHM6MLotgIPm56bKVFWcX8Vmf/YkR7XEB9GeBvEbirkIBwcQhls/gOTZqxcQ7w8ZDcVboAHhOKs2eYkp5LMBy7J/sIiDmz2u+Z8KHllayIcM6e/mJVPjZglJtq13+OyD2jXGReXxacqHOAXnnSc2bMqZta1225gyNSNac86W/Ne2VyOTA58S9jse9NdDp4l8XV2HWe2xoF4+d3BigNgFTEzfc19ZRMDoc/DF4SZFgLnGdJ1wsJTF1su8kuLt8aJfnjQAfL7Xq7BZJytOa9slpA45giPdfvJlzoOx/fJbnuhHobKuFaswXnz8usGdGp8Q8f6i8jRIYQfmxZuYAdz0WAzYlsciDdJQISLlQs4kGM8F86jGydixV6oB+EHp9cKNYjf6IK9XC5F8A7po0UaXP87pg3sRFmeSZP9RHyypGgDnf9ebpUelOXX5VcUiftbOnZAeJ+KOVT2aq3J68qtO35PE9jryj08uMqKeR7nL1q+l7wynSvLrxdpcH1N4I5Tx9g0uP66+ELBsV5FrNsqLvBNBRqc3s+h4/aJVWbq49Pg+nN3iBjz4zFy5/TGSgQqxwo0tK6vpf+U/lP6T+k/pf+U/lP6T+k//yfPhQN5lyOXN+RbjlzdvrTBTf3gQM5F68sbci1aX92emxgJlKr3BNXBMLQ/l5Vo02hxOhfVGDU6q7CNtPFB1RldjTmlqt97Ke8agVILn2pJOB5NmfdstY1UQSsgWZW0hjzEkFLZDGnkWmiDkB6jOD2BIlEdk1XMv8lWaCMPMaGabHebsbBGi5Ntp2y8kRrekTMb7th8fxh2z6jf3hAVzd4wHA7UZAKOex3eSBlxK/cjXVOqHrYyN1s0XmgtNFqaDHP2kdZCI3mE40LOBzOb8oNIScWQ+QMtSevH1Z8bfBDPMo/WjxdpoTr7zxRjQk2GXABVkek8yz4Sb9lo1tDmro92ufhrLRREqNlRmrvNVw2Tv1za997E2dWi8UBIypMrHKDDPzyj1MK40UD+AKvbtx8D6oCDOWH3F2vOe1aPw9OB0TTbz+ud1ypXWP0+AFaduhq0D7h/ch9k30kyuAyBP5xtF1pnV2sdu6vYR6fdv4QQH1SzlrTjSBmqPqnOPPGJWDbxgbzFrnAi5DOQRFVS5TSDRLoX1Xyvx5CXiwfpoNP4SpifUZbOGaam7unNQlJWKq58UyTGPygSY4TqHB9rYI6sQhEairsCQQqdjIb9A30QfZeSwWEIPFH2Qsv6mqyrygknIV0jgRGYtONIGao+sc78gFg2MYK8dSZCPsuSZD6zfjDIo1nzzycSeLl4guwCuhqKjqOqjlK11XGmxs8ISemMUs1eusuZt3+AJMqQzai/w+4pM9aOa+q2tg1Eod3Pdk8ZTQikUDbauNln+4D6h/rAfZeSwWEIvIHQsiTgquhOJIZYzlPN80ZD0o4jZcBNUGdeQCibeEEZ7UakfAaSJJT6boyaMMIo7OEz6AIxl0SSmY89zWSe0fw0xc+wpIxCnddoyEwh1NlYTyJzwAr7GD074+cNCFkhB2ipo/6hPnC/QTKgIfAGrEVJ1NXORYCDfA79l7TjSBlwE9SZF2BlEzfIWzci5TOQhHOlJ+BazGOyFnoNMXOGTI7aveWoGShJCV5q8TMkKV1hJuA/wLOQla6DOfUQzAKCCghQKBk9GQo9Qv3DfaBS5GSAeeILSIuTmKtR6QlA6vcaJwYTdxwoQ27KdeYFSNnED/TWCZDPEeYft70W431gH37DjhEPO2pDgbLLuKMCbNfpd/aZpEwOKgCZY4sf8O7jNFkrccAqhAhTB5WI+if2QUROBpgnnmCDaSXHEPMxKiOB+lqD9TOZuONAGXDzrakzr7DWlE0SQG+dAPnsPv9EwipsehZ2h41SJotlxnz/2iRpp2E1pQTWB4icDH6iUkk9H5Q8zWGX0smYZwonrYB8jjT/ROFHoOoeZAyLG/6ilJoEH7IeZA7kg1Lf+2tWRQoQ+8CByQDzJBNhzy1IuLmUCsZAcWYiIJ8jzT8RqBvjq4O+QlwEcdJn7xSTN2c08trQJDQPrCylZzPrgwxOBpsnXiKdm/mDlC4U9sFgHU/NZuSm2ewd0rkZ5XOk+UfEwUmzyW+QeZ/nkjTaHzj4xzIQlxyqI3Okp7U+KHZ0wvQTjEKuCSkUjBZ7hPon90ECJQMYAj+RgKuyOwDp4XB7tp0DknYcKQNugjrzN8hb2RVOpHwWJUWDOF73G+JFRXRXO98fstujKfA6uyxFVcdr9BouZA7JpWZv+K6huFW9dl09UJbORTVZs5qQQufr7FD/5D5IgGRAQ+AnEnBVdMeJD2Kuc4Vh94xRk6jjDr0F1QfqzN8gb0VXBCLlM5IUAbYj9BokRUkwRUxEsyYh3yORpbAwYqA5gqgfLL+kNXWSZyQmFtWYpHAhEDLRChV6BPon2y6BkgENgZ+I31XgI4YusoujPiJ5lrTjSJnsJrpHwt8gb2VXuA+R8hlIikiXnbM9hnRf22wvUfaO3Ne2MF4LJaT7WzN288CXQCk71g7mhN3TRsS4PSVjItS/n16zOWHECJwftadrgsJPr53vb0X9k/vAQckAhsBXm+N2FfmIoDIRYfcX/qqZSTuOlIluovtbPQ7yVnRF8CFSPgNJUWCJMfnz9W41LIciBsss94i1f5nirNYxjrarj94onMz4llax7ScSaYk3pOvheQ5XH38FMqRUg6491cM8h6uPvwIJG8IKVK7D0cdfg4TD04q+I1Suw9HH3EnR7T3wS/8p/af0n9J/Sv8p/af0nzJo/B4FCO56nideIOPCByxt2OpKvoy7WccTD/i6tGHrEzeKZFH6T+k//wWk8BZ/FNv4HQA=)

在 SSH shell 中运行以下命令：

- MP2

        gst-launch-1.0 -e filesrc location=/opt/<mp2_file>.mp2 ! mpegaudioparse ! mpg123audiodec ! pulsesink volume=10Copy to clipboard
- MP3

        gst-launch-1.0 -e filesrc location=/opt/<mp3_file>.mp3 ! mpegaudioparse ! mpg123audiodec ! pulsesink volume=10Copy to clipboard

如需停止用例，可按下 CTRL + C。

### 单次 FLAC 播放

此 pipeline 显示从文件源获取并在扬声器上播放的单个 FLAC 流。

Figure : FLAC 流播放 pipeline
                
                ![](data:image/png;base64,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)

在 SSH shell 中运行以下命令：

    gst-launch-1.0 -e filesrc location=/opt/<flac_file>.flac ! flacparse ! flacdec ! pulsesink volume=10Copy to clipboard

如需停止用例，可按下 CTRL + C。

### 单次 OGG 回放

此 pipeline 显示从文件源获取并在扬声器上播放的单个 OGG 流。

Figure : OGG 流播放 pipeline
                
                ![](data:image/png;base64,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)

在 SSH shell 中运行以下命令：

    gst-launch-1.0 -e filesrc location=/opt/<ogg_file>.ogg ! oggdemux ! vorbisdec ! audioconvert ! pulsesink volume=10Copy to clipboard

如需停止用例，可按下 CTRL + C。

Last Published: Nov 11, 2025

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