s=ltfatlogo;
ltfatlogo loads the 'ltfatlogo' signal. This is a sound synthezised from an artificial spectrogram of the word 'LTFAT'. See the help of ltfattext.
[sig,fs]=ltfatlogo additionally returns the sampling frequency fs.
The signal is 7200 samples long and recorded at 8 kHz. It has been scaled to not produce any clipping.
To produce a spectrogram of the logo, use:
sgram(ltfatlogo,8000,90);