Audio Spectrogram app for iPhone and iPad

Audio Spectrogram is a real-time spectrogram analyzer. It gives you a visual representation of an acoustic signal. It can be used to analyze the sounds of musical instruments, to identify spoken words phonetically, to measure the frequency response of audio equipment, or to picture the calls of different animals. You can also check “The Singer’s Formant”, the most important measure for every opera singer.

Features

- Spectrogram analyzer (color, black and white)
- Fast real-time response
- Sampling rates: 44.1kHz, 48kHz
- Fast Fourier Transform (FFT)
- Window sizes: 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536
- Zoom and pan
- Measure values
- Play back analysis (just tap on the spectrogram and play)
- Audio input can be supplied via the built-in microphone and an external microphone (via the USB camera adapter or through the iPhone/iPad dock connector – Core Audio compliant devices)
- Exporting to the iOS Document Browser (supports iCloud): audio recordings (wav) and image chart (png)
- Importing audio files from another application or from the iOS Document Browser (supports iCloud)
- Frequency scale: linear and logarithmic
- Amplitude scale: linear and logarithmic SPL (dBFS)