New updated - "ATG - Audio Tone Generator" ver 5.2


"ATG - Audio Tone Generator" has been updated to ver 5.2 today.

"ATG - Audio Tone Generator" is powerful reference audio test signal generator for iPhone.

It creates the reference audio test signals as Sine-wave, Frequency Sweep, White Noise and Pink Noise, and has a high precision of CD quality and a frequency accuracy.

It will help you to make the sound benchmark for audio equipment, loudspeakers, your listening environment, room acoustics and hearing check.

The audio test signals can be best used in conjunction with external devices, such as audio spectrum analyzer or sound level meter.

It can also generate octave band noise of 1/1 or 1/3 octave in NOISE mode. You can use it for detailed analysis of specific frequency bands.

In the latest version, the left and right channel balance control function has been added.

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- Testing for Loudspeakers and Headphones
- Burn-in for Audio equipment and Loudspeakers
- Testing and tuning for Audio amplifiers, Equalizers and many other Audio equipment.
- Acoustics testing
- Frequency response measurement for Audio systems using White noise and Pink noise
- Sound Masking
- Relaxation and Meditation
- Hearing Test
- Mosquito sound creation for teenagers

If you are interested in this app, please click the following link to display on the product information of App StoreTM.

posted by toons at 23:48 | News


"Haginotuyu" - Japanese Sake Brewery in Siga


I went to visit "Fukui Yahei Shoten", Japanese Sake Brewery of "Haginotuyu" in Takashima, Shiga Prefecture two weeks ago.

The company was founded in 1751 and has been making Sake for about 270 years.


I visited this sake brewery in May 2017, and it was a very valuable experience to be able to see it during the sake brewing.

This tour was allowed because the final steamed rice work in this season was completed a few days ago.


Sake brewing equipment is not open to the public. So I can only show the tank that Sake is brewing.


Finally, I tasted freshly made sake, aged sake and even orange liqueur.

All were very delicious. I came home with a tipsy feeling. Thank you very much Mr.Fukui CEO for inviting me.
posted by toons at 03:11 | diary


New updated - "Colored Noise Generator" ver 3.1 - Free of charge!


"Colored Noise Generator" has been updated to ver 3.1 today.

"Colored Noise Generator" is an innovative noise generator with the octave band filter.

This app can generate standard noise signals such as white noise, pink noise, brown noise, blue noise, purple noise and gray noise.

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In addition, it can generate a specific octave band noise signal by using the band-pass filtering of 1/1 octave band with ideal steep attenuation characteristics.

Octave band noise can be used for various purposes as a reference sound source for environmental sound measurement, sound tuning, tinnitus relief and sound masking. It can be also used for auditory effects such as sleep support.

Octave band noise can be created as a multi-band coupling signal by 1/1 octave band filter with a center frequency from 63Hz to 8kHz.

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Please to click the following link to see the app information. It will be open the product page on AppStore.

posted by toons at 09:32 | News


New updated - "Mosquitone Detector" ver 2.0


"Mosquitone Detector" has been updated to ver 2.0.

"Mosquitone Detector" is a sound measurement app that detects high frequency noises and ultrasonic sounds hard to hear for human ears.

It may have been exposed to artificial high frequency noise while you do not notice. This app can detect and visualize such high frequency noises.

For example, there are increasing cases where high-frequency noise generators are installed in various places as a purpose of repelling young people and beast pests using very high frequency mosquito noises that can not be heard by general adults.

Especially for young children, there are cases that they stay in the bad place even though on a very uncomfortable noise environment because adults can not recognize at all.

Please use this app to find the high frequency noise, so it will help you to quickly get away from the bad spot or remove the noise source.

- Detection of high frequency sound and ultrasonic wave, and display the peak frequency of the highest level. (Detection mode: DETECT)
- Search for sound source direction (Search mode: SEARCH): 360 degrees horizontally
- Detectable frequency range: 8kHz - 23kHz (2 band division)

In the latest version, the detectable frequency band has been extended. You can select the frequency band you want to detect from 16kHz or more or less than 16kHz.

Detection mode finds an inaudible high frequency and ultrasonic sound in the frequency band more than 16 kHz (or less than 16 kHz).

[Detection mode]
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"Search mode" finds the direction of occurrence of the high-frequency sound source that detected the peak frequency. It can be used only when high frequency or ultrasonic sound is founded in “Detection mode".

[Search mode]
mtd-search_v200.jpg mtd-search-L_v200.jpg

If you are interested in "Mosquitone Detector" app, please click the following link to display on the product information of App StoreTM.

posted by toons at 23:59 | News