【實用工具app】Tone Explorer|最夯免費app

ToneExplorer

ToneExplorer lets you generate, view, hear, and easily

manipulate basic audio signals using natural touch gestures.

- This is a UNIVERAL APP: one purchase works on both iPhone (iPod touch) and iPad.

The iPad interface is designed specifically the the iPad screen size.

==== Offers a very flexible tone generator ====

- Four waveform shapes to listen to / view:

- Sinusoidal

- Saw-tooth

- Triangular

- Square wave

- Enter aritrary values for frequency and amplitude.

==== Unique graphical/interactive interface to set paramegers ====

1. Waveform View:

The time-domain representation

of the signal, and change the frequency or

amplitude by simply pinching and stretching

the waveform.

2. Parameter View:

A "phase-space" view of the waveform's parameters:

frequency and amplitude. Control these two parameters

by moving a point in the frequency-amplitude plane.

Dragging finger can mimic theremin-like sounds.

Change units:

- Ampltiude: linear or logarithmic (dB, decibels) scale.

- Frequency: linear (Hertz) or logarithmic (midi note number) scale.

- Zoom in/out

Both views can be zoomed in and out.

Can make aritrarily fine-grained changes

to the parameters.

- A variety of other methods to set the frequency:

- Set to the frequency corresponding to a musical note.

Choose from presets of all notes spanning 11 octaves.

- Change frequency by musical intervals:

- Minor second

- Major second

- Minor third

- Major third

- Perfect fourth

- Tritone

- Perfect fifth

- Minor sixth

- Major sixth

- Minor seventh

- Major seventh

- Octave

- Set to frequency corresponding to notes on typical instruments. Presets include:

- Guitar

- Violin

- Viola

- Cello

- Bass

- Piano

==== More uses ====

- Check your hearing. Find the maximum frequency/amplitude setting you can hear.

- Educational. Learn and explore the concepts of amplitude, frequency, wavelength, pitch, and volume.

Also explore the differences between linear and logarithmic scales for frequency and amplitude.

- Musical ear training.

- Generate high-pitched tones: control dogs (dog whistle),

irritate young people, and confuse old people.

- Tune instruments. Includes settings for guiar,violin,viola,cello,bass, and piano.

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