tml3nr
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Tương tự mấy os kia ạ. Mình down file img về rồi burn ra thẻ.Cái này cài sao bác
Anh @mtminh nói là âm thanh của nó rất hay. Em chưa test kỹ. Do lúc trước em chủ yếu là chạy để học hỏi cách config của họ. Rất tinh vi và cầu kỳ.
Các anh xem ở đây ạ:Mấy cái cơ bản tụi này ko thấy nói nhỉ, như là có làm roon bridge ko, upnp ko v.v...
https://www.symphonic-mpd.com/forum/topic/10/symphonic-mpdの世界-the-world-of-symphonic-mpd#E
Play Symphony!
Symphonic-MPD, like Volumio and Moode, is a dedicated audio player distribution for Raspberry Pi single board computers.
In order to achieve high sound quality, it have specialized only in support of I2S connection, and have achieved great results in HDMI connection DAC and DAC HAT.
Audio playback is also available via MPD, Airplay, and Spotify Connect.
Our development policy is to pursue improved sound quality by reducing latency. We are very committed to this approach. Any unessential features that increase latency are against this policy and are discarded. Disabling upsampling (soxr) is an example of this.
Symphonic-MPD provides latency under 2µs on a Raspberry Pi. This is 2,500 times less than the 5ms claimed by Audiophile Linux, a typical Linux distribution for audiophiles which features a low latency real time kernel.
Characteristics of symphonic-mpd:
- Real-Time Kernel (Xenomai 3.0. 7)
- Proprietary Xenomai driver and playback software specialized for I₂S output has been developed
- Custom patching to kernel, MPD, AirPlay, Spotify Connect, ALSA-lib, and other libraries for high fidelity playback
- Optimized builds for a fast and compact system
- Optimized real-time priority and CPU execution
- mpd, AirPlay, Exclusive Spotify Connect (Automate unnecessary process stops and NAS unmounts)
- Reduction of noise and stabilization of voltage by stopping HDMI, Wi-Fi, Bluetooth services, and USB bus power, underclocking of CPU/GPU, and turning off LEDs
- Improved PLL accuracy improves the sound quality of I2S HAT when running in slave mode. When using I2S HAT that runs in master mode, PLL setting is canceled by replacing dt-blob.bin. This reduces CPU load.
- Reduction of operating system jitter by suppressing kernel thread interrupts and tuning kernel parameters
- ALSA buffer tuning to match the playback sampling rate
- Auto-Tuning of NAS mount settings to optimize throughput (It takes about 30 seconds to measure throughput.)
- Ultra-lightweight, low load web server YMPD as a Web UI
- UNIX domain socket communication between MPD and YMPD rather than the typical use of TCP port 6600
- Online version updating
https://www.diyaudio.com/forums/pc-based/355137-symphonic-mpd-post6220498.html
papalius đã viết:...... symphonic-mpd is a distribution of aarch64 based on LFS (Linux From Scratch).
All the software that we configure is built with Raspberry Pi4 (Cortex-A72) specific build options and configured to have minimal functionality.
The downside of being LFS-based is that it doesn't have a good package management system like Arch or debian.
If you want to add the software, you need to build it from the source.
However, we do provide pre-built packages for additional software that many users have requested.
The unique symphonic-mpd package management command "app" has a similar interface to apt and yum.
Mã:root [ ~ ]# app --help symphonic-mpd app installer Usage: app <command> [<args>] showcase Lists available packages. list Lists installed packages. search <app> Searches the repository for the specified package. install <app> Download and install the specified package. remove <app> Uninstalls the specified package. show <app> Displays the details of installed packages. hash <app> Print hash.
Các anh lưu ý là OS này không optimize đường USB:
papalius đã viết:......In symphonic-mpd, the USB output is not optimized in any way.
Not only that, it also uses libusb and hub-ctrl to stop all USB ports when booting the OS.
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