A guide for Audition:
1. Start Audition
2. Set the proper Spectral Display preferences[/list]
Window Function (apodization function) = Blackman-Harris or Hanning or Kaiser
Spectral Resolution (FFT window) = 1024
Decibel Range = 160-180 dB
Panels in the Window menu = Editor, Files, Frequency Analysis, Properties, Selection / View, Tools, Zoom
3. Open the audio file of interest
File -> Open
4. Use the viewing options to select the Spectral Display
View -> Show Spectral Display
Your version of Audition may show a green bar for zooming
5. View only a single channel
Edit -> Extract Channels to Mono Files
Choose either the left or right channel in the Editor pulldown menu (this is located above the waveform plot)
Confirm that the time scale is visible on your plot
Confirm that the frequency scale is visible on your plot
Use a linear frequency scale (right-click on the scale and select Full Linear)
---------- Post added at 07:26 AM ---------- Previous post was at 07:24 AM ----------
For command line you can use Sox
1. Open a command shell or terminal
2. Make sure your PATH variable includes /usr/local/bin & /usr/local/lib
[echo $PATH
3. Confirm that the sox binary is located in /usr/local/bin
locate sox
4. Confirm that your installation is functional by playing an audio file
sox "C:\My Directory\My Folder\my.flac" -d (for Windows)
sox /My \ Directory/My \ Folder/my.flac -d (for OS X or Linux; or drag and drop into the terminal)
Hit Ctrl-C to abort the operation
5. Generate a full audio file screenshot (only Windows command lines will be given from this point on as the corresponding OS X and Linux commands are self-evident)
sox "C:\My Directory\My Folder\fullsong.flac" -n remix 1 spectrogram -x 3000 -y 513 -z 120 -w Kaiser -o "C:\My Directory\My Folder\song.png"
6. Generate a zoomed screenshot at the 1:00 minute mark for 4 seconds (modify these parameters to zoom in on your particular audio region of interest)
sox "C:\My Directory\My Folder\song.flac" -n remix 1 spectrogram -X 500 -y 1025 -z 120 -w Kaiser -S 1:00 -d 0:04 -o "C:\My Directory\My Folder\partialsong.png"
---------- Post added at 07:27 AM ---------- Previous post was at 07:26 AM ----------
And there's also Spec but it isn't very good for viewing image..
http://spek.cc/
---------- Post added at 07:28 AM ---------- Previous post was at 07:27 AM ----------
How to identify a FLAC file whether it was originally ripped from CD or converted from lossy files (mp3,m4a). Because, some FLAC files are no more better than mp3's.
I hope your question is answered!