November 2005
Beginner
330 pages
9h 44m
English
Content preview from Linux Multimedia HacksBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Pass the Mic and Record Audio
You don’t need a fancy GUI tool to record audio under Linux. Use SoX’s rec utility to record audio from your microphone—and do it all from the command line.
Some people might wonder, with all the different graphical audio recording tools out there, why you would want to record sound from the command line. Audacity has everything you need to record, edit, and save audio in a nice interface, and I even cover how to use it to record audio in [Hack #34] . Even with these tools available, there are certain advantages to recording audio from the command line. For one, it’s completely scriptable and can be easily scheduled with tools like cron and can be used to create a radio TiVo of sorts. For example, at one point there was a weekly radio show that I sometimes wasn’t home to listen to. I wanted to record the broadcast and listen to it later, so I hooked up my computer microphone input with my radio’s headphone output and left the radio tuned to that channel. Then I set a cron job to turn up my mic volume with aumix [Hack #13] and then run the recording program. This hack tells you how to use the SoX sound sample translator and its included rec frontend to start recording audio with just a few keystrokes.
The SoX sound sample translator is a very powerful audio editing tool. It not only can convert between a number of audio formats, but it can also modify audio input, adding echoes, fade in and out, and other effects. For this hack, I use a frontend included ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.