Sonance Mac Audio Spectrum Analyzer, Spectrograph and Music App (2023)

sound you can see!

Sonance is an audio spectrum analyzer and spectrograph app and music player. It analyzes the audio from the internal microphone, line-in, USB devices and plays songs from the Apple Music app or iTunes library and displays the results in three separate views. The music player plays songs from your local iTunes library.

The waveform view displays the raw input signal as a solid wavy line, with each waveform being a sound burst.

The spectrum view shows the distribution of frequencies as vertical bars, each bar representing a group of frequencies, with the height indicating the strength of those frequencies within the audio signal.

The spectrogram view shows a two-dimensional view of the frequencies of the audio spectrum over time. Each pixel represents a group of frequencies, and its color indicates the strength of those frequencies. The vertical rows represent different frequencies and the horizontal columns represent time.

Frequencies range from 0 hertz to 48,000 hertz, or 48K, which is half the sampling rate of 96,000 audio samples per second of the maximum sampling rate of a Macbook Pro's internal microphone. Display rates are half the input device's sample rate, which can be 44,100, 48,000, 88,200, or 96,000 samples per second. For music played through the music player it depends on the speed contained in each song, most being in the 0 to 22050 hertz range or half the 44100 samples per second used in CD recording.

Because you're also using the microphone, any sound that the microphone picks up is analyzed and displayed, so you can play music on your computer or use another sound system and see the frequency distribution, spectral density and shape of the microphone. Mood.

In the waveform view, you can adjust the input gain (height of the waveform), the display width on the fly, and freeze the display.

The horizontal scale represents time in seconds. The vertical scale shows the value of the audio sample. For the 32-bit floating point audio codec, the values ​​range from -1.0 to 1.0. Voltage or power units are lost when converting to digital format.

The input levels differ greatly between the recorded audio and the microphone. Sonance has separate settings for both modes and switches automatically. This affects input gain in waveform view, vMag in spectrum view, and sensitivity in spectrogram view.

In the spectrum view, you can adjust vertical magnification (vMag) and horizontal zoom (hZoom) on the fly. Vertical zoom adjusts the height of the bar, and horizontal zoom allows you to zoom in on specific frequencies. After changing the hZoom slider, you can use the scroll bar to see the full spectrum, albeit zoomed in.

In the spectrogram view, you can adjust the sensitivity slider to control the intensity of the color. The vertical zoom slider (vZoom) behaves similarly to the hZoom slider in the spectrum view. Once you've adjusted your zoom level, you can use the scroll bar to see the full spectrum, albeit zoomed in. Use the button to freeze and unfreeze the screen.

A full-screen display is available for each of these three views. Choose the View menu item, then choose Full Screen, or use the keyboard shortcut Command-F. You can also click Full Screen Display on the View menu to put the active button or window in full screen mode. You can return to the window view by pressing the escape key.

You can also record a spectrogram to view later. By selecting View -> Spectrogram Recording Control Panel you can start and stop recording and save your data.

Both the spectrogram and waveform information are stored in a JPEG image. The saved image can become quite large, the dimensions are: width, 20 pixels per second recording. Height, spectrogram height + 100 pixels for waveform data, + 28 pixels for title text.

Successfully captured an 11 minute spectrogram on a MacBook Pro with 4 giga RAM, handled with ease.

channel selection

You can select right, left, or combined channel data individually for each view. Just use the View menu and select.

The music player included with Sonance plays music from the Apple Music application or the user's iTunes library. These songs must be local to the Mac where Sonance is installed. Home Sharing from another Mac is not currently supported by the iTunes Library Framework. Support for iTunes library content that is an Internet broadcast or Internet radio station has limited support. This selection will play, but raw audio is not always available. In this case, the displays only work with what is picked up by the microphone.

Choose between horizontal or vertical music player view.

Music player control

	SPIELEN		REPEAT OFF
	BREAK		REPEAT THE CURRENT SONG
	NEXT SONG		REPEAT PLAYLIST
	PREVIOUS SONG		SHIFFLE OFF
	MUSIC COLLECTION		RANDOM ON (ALL TITLES)

music collection

Select individual songs, multiple songs or playlists to play. Search or filter albums, artists, compilations, composers and genres.

You can have the music player start automatically. Peak, mid and base colors for loudness meter and music player orientation.

For waveform view, you can also choose any color for waveform display. You can also check whether you want to start the waveform view on startup or not.

You can also choose the frame rate in frames per second for the view.

You have several options for the spectrum view.

Selecting the Fast Fourier Transform algorithm allows you to choose between our algorithm for determining the heights of each spectrum bar or the macOS Accelerate algorithm. The macOS Accelerate algorithm is included in Apple's Accelerate Framework on your Mac. Both algorithms work very well but have slight differences in their output. Try them both!

FFT window function. Choose from Rectangular, Hanning, Hamming, Blackman, or Blackman-Harris window functions. A detailed description of the window functions can be found underFeatures of the Wikipedia window.

Selecting the number of spectrum bars allows you to choose from 8 to 1024 spectrum bars on the screen.

The Spectral Flames box turns the fire on and off. The image of a flame is scaled to the appropriate height for each spectrum bar. The color picker for the top and bottom spectrum allows you to spread color across the height of the spectrum bars for a great looking effect.

The Log Scaling check box allows you to display the spectrum bars so that the lower frequencies have more bars and the higher frequencies have fewer bars. This allows you to see common sounds in more detail, e.g. B. human voices and music.

The Drop Rate slider lets you control how quickly the bars return to the bottom of the screen. The control gives you full control as the far left value bar drops immediately and the far right doesn't drop at all.

The auto-launch checkbox allows you to launch this view when Sonance starts.

You can also choose the frame rate in frames per second for the view.

For the spectrogram view, you have several options to choose from.

Selecting the Fast Fourier Transform algorithm allows you to choose between our algorithm for determining the heights of each spectrum bar or the macOS Accelerate algorithm. OS X's Accelerate algorithm is included in Apple's Accelerate Framework on your Mac. Spectrum View and Spectrogram View can use different FFTs, so set the options to your liking.

FFT window function. Choose from Rectangular, Hanning, Hamming, Blackman, or Blackman-Harris window functions. A detailed description of the window functions can be found underFeatures of the Wikipedia window

The width and height selectors allow you to control the resolution of the spectrogram. Choose between 128 and 1024 in each selection. The height selection is passed to the FFT just as the bar count field is passed in the spectrum view.

You can customize the color gamut by choosing your own color settings for the spectrograph's Base, Level 1, Level 2, and Peak colors. These color choices distribute their gradients linearly.

The Log Scale check box allows you to display the spectrogram so that the lower frequencies appear with more pixels and the higher frequencies appear with fewer pixels. This allows you to see common sounds in more detail, e.g. B. human voices and music.

The auto-launch checkbox allows you to launch this view when Sonance starts.

You can also choose the frame rate in frames per second for the view.

Input selection, levels and filtering

To select the line-in input, adjust the input volume, and turn ambient noise reduction on and off, use the System Preferences application, in the Hardware group, select Sound.

You can use the Audio MIDI Setup application in the Utilities folder to control the sample rate of input devices.

Application help is available from the main menu under the Help item and also from the help buttons in the settings panes.

Have fun with the App!!Sonance for iOS is also available! Check out Sound View for Android!