Italian parsley flowers bloomed!


Italian parsley flowers have begun to bloom in my garden!

Italian parsley is essential for my table. I enjoyed various dishes and salads.

However, when it comes to flower buds, the leaves turn into elongated shapes and the leaves and stems become harder.
posted by toons at 17:39 | diary


New updated - "Sound Level Analyzer PRO” ver 3.0


"Sound Level Analyzer PRO" has been updated to ver 3.0.

"Sound Level Analyzer PRO" is a new integrated sound measurement app with sound level measurement and powerful sound analysis tools.

It is a professional-grade sound level measurement app further evolved from "Sound Level Analyzer".

It can display automatically the instantaneous sound level such as environmental noise, specific sound sources, live sounds in real-time.

# Top view (Sound level meter)
slapro_main_v310.jpg slapro_main_2_v310.jpg

In addition, this app has advanced sound analysis functions that can perform "Power Spectrum Analyzer", "Time Course graph", and "Statistical Analysis (Histogram, Percentile Level)".

It can be used to analyze characteristics and trends of occurrence for the noise/sound source.

In the latest version, the FFT analysis display has been changed to make it easier to see the frequency bands with high audibility (100Hz-3kHz, 3kHz-6kHz). Also, it has been added a process to prevent erroneous operation during measurement.

# Power Spectrum (1/3-octave band response analysis, FFT analysis)
slapro_ps_all_2_v310.jpg slapro_ps_max_v310.jpg

slapro_ps_mid_v310.jpg slapro_ps_high_v310.jpg 

# Time Course graph

# Statistical Analysis (Histogram, Percentile Level)
slapro_sa_hist_v310.jpg slapro_sa_ln_v310.jpg

# Examples of the sound level vs. the environmental noise.
 130dB : Engine sound of Airplane
 110dB : Horn of Car
 100dB : Noise of passing train
 90dB : In loud factory
 80dB : In the train, Vacuum cleaner
 70dB : Noisy office, Noisy street
 60dB : Quiet Car, Normal conversation
 50dB : Quiet office
 40dB : In the library, Quiet residential area
 30dB : Outskirts of midnight, Whisper
 20dB : Sounds of rubbing leaves

Note: The standard noise measurement range is 30 to 130 dBA, and the measured value (Leq) is about 30 dBA in a quiet room. Noise levels are never measured at 0dBA even in very quiet environments.

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 23:35 | News


Watercress flower


Watercress flowers have bloomed!

Small pretty flowers have begun to bloom on the watercress sewed last autumn. The flower is edible, but it may be pretty bitter.
posted by toons at 03:44 | diary


COVID-19 vs. Noises in living environment

The declaration of emergency due to COVID-19 has been extended until the end of May.

Feel like the tunnel with no visible exit, or rather, it may be lost the way myself in a deep forest with no map and no compass.

Currently, our fight against the new coronavirus is left to the actions of the individual.

However, due to self-restraint in social activities, the time spent at home is greatly increased, and our various stresses tend to accumulate.

Now the problem of noises in the living environment may become apparent.

The sensitivity of noise varies greatly from person to person, so we have no choice but to find the source of the noise and find a solution.

Knowing the noise situation in yourself and at home will help you to deal with outside noises as well.

So introduce our app that supports such living environment sound problems. There are also free editions, so please feel free to try them.

icon-sla_v300.png "Sound Level Analyzer"

"Sound Level Analyzer" is a standard sound level measurement app with sound frequency analysis tools.
It can display automatically the instantaneous sound level such as environmental noise, specific sound sources, live sounds in real-time.
In addition, the high-end app "Sound Level Analyzer PRO" has more powerful noise analysis function. " Sound Level Analyzer Lite " is also provided free of charge !

sla_top_v310.jpg sla_fft_v310.jpg

icon-lfd_v100.png Low Frequency Detector

"Low Frequency Detector" is a new acoustic measurement tool for detecting low frequency noises that is hard to hear in the normal situation. It supports very lower frequency range less than 100Hz.

lfd_time_v200.png lfd_fft_v200.png

icon-mtd_v100.png Mosquitone Detector

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. It can detect and visualize such high-frequency noises.

mtd-detect_v200.jpg mtd-search_v200.jpg

icon-vs_v300.png Vibroscope

"Vibroscope" is a new analysis tool for analyzing vibration by using the iPhone's acceleration sensor in real-time. It allows you to monitor by visualizing the low-frequency vibration, such as inaudible by ear. "Vibroscope Lite" is also provided free of charge !

vs_main_1_v400.png vs_fft_1_v400.jpg
posted by toons at 03:05 | Environmental noise


An experiment with ScanSpeak 5cm SP unit

Due to the action restrictions for COVID-19, I can spend a lot of time for my house cleaning.

I discarded old pens, dry ink, and old mechanical pencils, so I had two empty pen stands.
An acrylic cylinder case purchased from the MUJI store, with a diameter of 8 cm and a height of 10 cm. The same thing has already disappeared in the MUJI web shop.

It would be a little fashionable if a speaker was installed in it. However, the only unit that fits this size is ... only ScanSpeak 5cm full range (5F/8422T03) from Stereo magazine appendix some years ago.


When I removed the unit from the sleeping SP box and tried to match it, I needed something to support the unit. It was necessary to cut a 7mm thick MDF into a circle.
However, this has become a few daunting task. Using a free cone, I first made a hole in the unit diameter and then cut out the surrounding area, but the diameter slightly shifted. I decided to make some double-layered discs and pick out some of them. At this work, I spent all afternoon.

In addition, I was thinking of adding duct-like things to the acrylic pillars. There was no tool to open a hole of about 10 mm, and cracks were likely to occur when trying to forcefully open it, so only the hole for the cord was made.


I finished this work and connected the unit. I measured the frequency response without using any sound absorbing material, and it was similar to a bare unit. It fell smoothly below 100Hz, and it felt like a closed type.


When I tried to connect another unit here, there was no sound. The resistance value was not stable even when measured with a tester, and it was broken. I gave up listening to the stereo sound with the pair units.
This unit is still selling at the ONTOMO net shop, so I would like to try it again if I have the opportunity.

This time I will record it as an experiment.

Note: Handcraft speaker using ScanSpeak 5cm full range "5F/8422T03", 2017/3/20
posted by toons at 19:44 | Audio