How to increase the volume in an m4a file?

Posted by Phenom on Super User See other posts from Super User or by Phenom
Published on 2009-12-19T13:09:46Z Indexed on 2010/03/18 10:11 UTC
Read the original article Hit count: 431

Filed under:

m4a

|

volume

|

audio

I have an m4a file (actually m4b, but its the same thing), and when listening to it on my ipod touch the volume is too low, even when I turn it all the way up. I need to increase the volume in the file so that I can hear what is being said. Also in the background it sounds like there is a hissing sound that I'd like to get rid of.

© Super User or respective owner

Related posts about m4a

Why is my ogg bigger than my m4a?

as seen on Super User - Search for 'Super User'
I am using the following commands to encode an audio file to m4a & ogg formats: ffmpeg.exe -i 0123456789 -ab 192k out.m4a ffmpeg.exe -i 0123456789 -f wav - | oggenc2.exe - -r -q 6 -o out.ogg (0123456789 has no extension.) My m4a output is 14,608kB while my ogg output is 19,809kB. Why? AFAIK… >>> More
Why is my ogg bigger then my m4a?

as seen on Super User - Search for 'Super User'
i am using ffmpeg.exe -i 0123456789 -ab 192k out.m4a ffmpeg.exe -i 0123456789 -f wav - | oggenc2.exe - -r -q 6 -o out.ogg (0123456789 has no extension). My m4a output is 14,608kb while my ogg output is 19,809kb why? AFAIK -q 6 is roughly 192kb. So it should be about even. I could see one file… >>> More
WPF MediaPlayer doesn't play M4A?

as seen on Stack Overflow - Search for 'Stack Overflow'
I am trying to use a MediaPlayer instance to play M4A files. For those of you that aren't familiar, MediaPlayer is the non-XAML version of a MediaElement. There are pretty much the same, but I don't want any XAML, so I use a MediaPlayer instead. Anyways, it plays some M4A files just fine. The NaturalDuration… >>> More
What's in a name? .aac V .m4a? aac->Works on website quicktime. m4a->works on iPad

as seen on Stack Overflow - Search for 'Stack Overflow'
What is the difference between an .aac file and an .m4a file? If I just change the file extension of an audio file recorded and then converted into "AAC" between .aac/.m4a it drastically affects how the file is treated. AAC: Plays in a web browser, not on the iPad M4A: Plays on the iPad, not on… >>> More
Is there now any way to convert mp3 files to m4a or aac 192kbit?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Since about two years now I am trying to find a way to convert high quality mp3 files to m4a or aac files with a fixed bitrate 192k. Please don't suggest using another format - i thought this through as far as it goes. The problem here is: ffmpeg obvioulsy can't convert to a higher bitrate than… >>> More

Related posts about volume

Make 'volume up' from 'mute' go to volume step one not previous volume on Macbook Pro

as seen on Super User - Search for 'Super User'
Currently, on my Macbook Pro (OSX 10.6.5), I will often use the 'mute' button to turn the volume off, for example if I'm working at night. I may then watch a video or something, and decide to have the volume on very quietly. So I press the 'volume up' key—but instead of going to volume level one (the… >>> More
Exalogic 2.0.1 Tea Break Snippets - Scripting Asset Creation

as seen on Oracle Blogs - Search for 'Oracle Blogs'
So far in this series we have looked at creating asset within the EMOC BUI but the Exalogic 2.0.1 installation also provide the Iaas cli as an alternative to most of the common functionality available within EMOC. The IaaS cli interface provides access to the functions… >>> More
Software that can reset wave volume and overall volume to max

as seen on Super User - Search for 'Super User'
Does anybody know of a software or a Windows feature that can reset Windows XP's wave volume and overall volume to max? I have tried Wizmo (grc.com) but it doesn't seem to able to reset the wave volume, only the overall volume. The program should preferably have a feature or command line switch… >>> More
Linking "Wave Volume" to "Main Speaker Volume"

as seen on Super User - Search for 'Super User'
I've got a Logitech keyboard and a digital sound device. The Logitech keyboard has a little volume wheel that sets the Main Speaker Volume. The digital sound device ignores the Main Speaker Volume and only pays attention to Wave Volume. See the issue? I'm looking for a program that can link Wave… >>> More
Make Vista Volume Control to remember application-level volume level

as seen on Server Fault - Search for 'Server Fault'
Windows Vista has an application-level volume levels for sound devices. There is a Speaker (master volume), an "application" Windows Sounds and further applications. What makes the system to forget the volume level for Windows Sounds. >>> More