Are there going to be updates?
Yes - no software is ever "finished" and there are always things to be improved.

Will these Apps run on all iPhones, iPod Touches and iPads?
Yes, they are tested for release to all systemsas of January 2011.

Theremini - The FAQs for Harmonic Synthesis and 8ve Oscillator are relevant also
Why is it difficult to maintain a fixed pitch
In music performance, no acoustic instrument can maintain an absolutely fixed (monotone) pitch, there is always variation. Theremini enables variation with vibrato and by responding to undulating movement along its pitch axis.

Can the speed of response be altered?
In the flip screen (press the "i" button), adjust the slider between the tortoise and the rabbit. This affects both the pitch and volume responses.

HarmSyn - Harmonic Synthesis for iPad (see also the FAQs for the Lite version)
Why can't I hear anything?
Check that the volume control on the side is above the minimum.

Why can't I hear some of the sounds easily?
The iPad loudspeakers are small and they will not produce high levels at extreme frequencies. Human hearing is less sensitive at high frequencies and this is more marked with age. Anyone over 25 is unlikely to be able to hear the 16 kHz tone.

HarmSynLite - Harmonic Synthesis Lite
Why is there a Lite version?
This enables the App to be tried out and the use of Lite versions is encouraged by Apple - "try before you buy".

What is the difference between the Lite and Full version?
Additional harmonic sliders, a greater fundamental frequency range, logarithmic as well as linear f0 slider and more presets are included in the full version.

Wedding Service Music
Why can't I hear anything on the iPhone?
Check that the mute switch on the side is off and that the volume control on the side is above the minimum.

Who played the musical examples?
David played all the music examples on a home organ except for one that is played on a large pipe organ.

8ve Oscillator - Octave Oscillator (see also the FAQs for the Lite version)
Why can't I hear anything on the iPhone?
Check that the mute switch on the side is off and that the volume control on the side is above the minimum.

Why can't I hear some of the sounds easily?
The iPhone/iTouch loudspeakers are small and they are not able to produce high levels at extreme frequencies. In addition, human hearing is less sensitive at extremes of the frequency range and this becomes more marked with age; for exmple, anyone over 25 is unlikely to be able to hear the 16 kHz tone.

8ve Oscillator Lite - Octave Oscillator Lite (see also the FAQs for the full version)
Why is there a Lite version?
This enables the App to be tried out and the use of Lite versions is encouraged by Apple - "try before you buy".

What is the difference between the Lite and Full version?
Additional frequencies are included in the full version (125 Hz and 16 kHz) as well as a text entry box to allow arbitrary frequency values to be entered. In addition, the full version also offers 1, 3, and 10 dB step volume controls (the Lite version only has a 6 dB step volume control).

Organ Stops
What are the snippets of organ music on the title page?
1: start of symphony 5 by Widor; 2: start of the prelude in G by Bach; 3: part of Tuba Tune by Lang; 4: part of Mohrentanz by Susato.

Who was the organist?
It was me!

Are there other footages?
I am not aware of any more. I do not count electronic organ stops where there are examples of 128' pedal stops. If you know of any I have missed, please do let me know - please email to "appsupport<at>davidmhoward.com".

Can I suggest new stop footages or names to be included?
Yes I would be very happy to have suggestions - please email to "support<at>davidmhoward.com".

What is the footage calculator for?
Each stop has a footage associated with it which indicates the length of the open pipe that plays when bottom C is pressed. The organ is an acouistic harmonic synthesiser, and the eight foot, or 8', stop is in concert pitch (the notes play the same pitches as on a piano keyboard). Half the footage and the pitch goes up 1 octave (a 4' plays an octave higher and a 2' an octave higher again). Similarly a 16' plays an octave lower than an 8' and a 32' an octave lower again. The footage calculator finds the pipe length for a selected HARMONIC of a selected FUNDAMENTAL (such as 8').