RTL Utility is a tool for measuring the Round Trip Latency of your Digital Audio Workstation (DAW) and audio interface. The utility is used for low latency performance testing by system builders, reviewers, device manufacturers and at dawbench.com.
When your DAW sends data to your audio interface for playback, it doesn’t send a continuous stream of data one bit at a time. What it does is fill up a section of RAM called a buffer and sends that in a single message when it is ready. Before sending the next message it has to fill the buffer again. This wait time introduces a latency, or delay, between something happening in your DAW and when you actually hear it.
While you are recording, the audio interface buffers and sends data to your DAW in a similar fashion. This introduces latency into your recordings.
If you send a signal from your DAW, out through the audio interface and back in via a loopback patch, then there will be a round trip latency which is the sum of the output and input delays. This is the RTL.
Tag Archives: Ubuntu
Soundnode ~ SoundCloud For The Desktop
Soundnode App is an Open-Source project to support Soundcloud for desktop Mac, Windows, and Linux. It’s built with Electron, Node.js, Angular.js, and uses the Soundcloud API.
soundnode.github.io/soundnode-website
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fdkaac ~ Command Line Frontend For libfdk-aac Encoder
dkaac reads linear PCM audio in either WAV, raw PCM, or CAF format, and encodes it into either M4A / AAC file. If the input file is "-", data is read from stdin. Likewise, if the output file is "-", data is written to stdout if one of streamable AAC transport formats are selected by **-f**. When CAF input and M4A output is used, tags in CAF file are copied into the resulting M4A. github.com/nu774/fdkaac github.com/mstorsjo/fdk-aac launchpad.net/ubuntu/bionic/+package/fdkaac packages.debian.org/stretch/fdkaac
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Midi Sheet Music ~ Cross-platform MIDI Player
Midi Sheet Music is a free program that plays MIDI music files while highlighting both the piano keys and sheet music notes. Works on Windows, Mac OS X, Linux Ubuntu, iPhone / iPad and Android.
midisheetmusic.com
sourceforge.net/projects/midisheetmusic
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sndio ~ Unix Audio & MIDI Server
Sndio is a small audio and MIDI framework part of the OpenBSD project and ported to FreeBSD, Linux and NetBSD. It provides a lightweight audio & MIDI server and a fully documented user-space API to access either the server or the hardware directly in a uniform way. Sndio is designed to work for desktop applications, but pays special attention to synchronization mechanisms and reliability required by music applications. Reliability through simplicity is part of the project goals.
sndio.org
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Calf Studio Gear ~ Free Your Sound!
You have the need for professional and state-of-the-art audio plug-ins – but don’t have thousands of bucks to spend on it? Then we believe you will love Calf Studio Gear! Focused on high-quality sound processing and a highly usable interface Calf Studio Gear is designed to give you a professional production environment for your open source operating system. Play your SF2 sample banks, create filthy organs, fatten your sounds with phasers, delays, reverbs and other FX, process your recordings with gates, compressors, deesser and finally master your stuff with multiband dynamics – for free! Calf Studio Gear is available exclusively for LINUX-based operating systems and runs as a stand-alone effect rack connectable through Jack sound server or as plug-ins in every audio host that is able to fire up LV2 compliant devices, e.g. the highly recommended Ardour Audio Workstation
calf-studio-gear.org
github.com/calf-studio-gear
en.wikipedia.org/wiki/Calf_Studio_Gear
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TAL Reverb ~ Cross Platform Reverberation VSTs
TAL Reverb-II is a super diffuse and lush reverb effect with a fast build up time. Ideal for ambient reverb sounds.
TAL-Reverb-III is an easy to use stereo reverb plugin. It’s popular because it’s very very diffuse sound 😉 It has an additional signal feedback path.
tal-software.com/products/tal-reverb
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OSD Lyrics ~ Linux On Screen Lyrics
Show synced lyrics with your favorite media player on Linux. OSD Lyrics is a desktop application to view lyrics compatible with various media players. It is not a plugin but a standalone program. OSD Lyrics shows lyrics on your desktop, in the style similar to KaraOK. It also provides another displaying style, in which lyrics scroll from bottom to top. OSD Lyrics can download lyrics from the network automatically.
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Shairport Sync ~ Unix AirPlay Player
Shairport Sync is an AirPlay audio player – it plays audio streamed from iTunes, iOS, Apple TV and macOS devices and AirPlay sources such as Quicktime Player and ForkedDaapd, among others.
Audio played by a Shairport Sync-powered device stays synchronised with the source and hence with similar devices playing the same source. In this way, synchronised multi-room audio is possible for players that support it, such as iTunes and the macOS Music app.
Shairport Sync runs on Linux, FreeBSD and OpenBSD. It does not support AirPlay video or photo streaming.
github.com/mikebrady/shairport-sync
github.com/mikebrady/shairport-sync/wiki
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Asunder ~ Linux Audio CD Ripper
Asunder is a graphical Audio CD ripper and encoder for Linux. You can use it to save tracks from an Audio CD as any of WAV, MP3, OGG, FLAC, Opus, WavPack, Musepack, AAC, and Monkey’s Audio files.
littlesvr.ca/asunder
snapcraft.io/asunder-casept
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Skywave Linux ~ Global Online Listening
Skywave Linux is a 64 bit live system providing installed and configured software for accessing software defined radio servers locally and on the internet. With this operating system, a person may tune shortwave broadcasts, amateur radio, aeronautical, maritime, or other signals received at remote servers around the world.
SDR software is configured for popular devices, such as the RTL-SDR dongles, Softrocks, Hermes, and other radios.
Skywave Linux is a 64 bit system built over Ubuntu Linux, and may be installed on a bootable USB stick, SD card, DVD, or hard drive.
Features:
- WebSDR, OpenWebRX radio servers accessible via internet browser.
- HPSDR servers accessible via QtRadio
- HPSDR hardware also via cudaSDR
- RTL-SDR plug-and-play functionality via CubicSDR, Gqrx, and QtRadio
- RTL-SDR ADS-B tracking and mapping via Dump1090
- RTL-SDR RDS decoding via Gqrx and Redsea
- SDRPlay, Airspy radio hardware is supported.
- LADSPA audio plugins for EQ/Compression/Limiting
- WSJT -X / WSPR-X weak signal digimode software
- Weather Satellite Decoding via WXtoImg
- Satellite tracking with Gpredict
- Trunked Radio System Reception with SDRTrunk
- Radio firmware & data management with CHIRP
- Kodi Media Center for conventional internet streaming
skywavelinux.com
sourceforge.net/projects/skywavelinux
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zxtune ~ Cross-platform Chiptunes Player
Plays audio files from many systems including the ZX Spectrum, Acorn, Amstrad, Amiga, Atari, Commodore 64, GameBoy, MSX, Nes, PC, Phillips, SNES, Sam Coupe, Sega, TurboGrafX, etc.
zxtune.bitbucket.io
github.com/vitamin-caig/zxtune
The Audio File 