다운로드 SPLnFFT Noise Meter

다른 한편에서는 원활한 경험을하려면 파일을 장치에 다운로드 한 후 파일을 사용하는 방법을 알아야합니다. APK 파일은 Android 앱의 원시 파일이며 Android 패키지 키트를 의미합니다. 모바일 앱 배포 및 설치를 위해 Android 운영 체제에서 사용하는 패키지 파일 형식입니다.
네 가지 간단한 단계에서 사용 방법을 알려 드리겠습니다. SPLnFFT Noise Meter 귀하의 전화 번호.

1 단계 : 다운로드 SPLnFFT Noise Meter 귀하의 기기에서

아래의 다운로드 미러를 사용하여 지금 당장이 작업을 수행 할 수 있습니다. 그것의 99 % 보장 . 컴퓨터에서 파일을 다운로드하는 경우, 그것을 안드로이드 장치로 옮기십시오.  

2 단계 : 기기에 타사 앱 허용

설치하려면 SPLnFFT Noise Meter 타사 응용 프로그램이 현재 설치 소스로 활성화되어 있는지 확인해야합니다. 메뉴 > 설정 > 보안> 으로 이동하여 알 수없는 소스 를 선택하여 휴대 전화가 Google Play 스토어 이외의 소스에서 앱을 설치하도록 허용하십시오.

3 단계 : 파일 관리자로 이동

이제 위치를 찾으십시오 SPLnFFT Noise Meter 방금 다운로드 한 파일입니다.
일단 당신이 SPLnFFT Noise Meter 파일을 클릭하면 일반 설치 프로세스가 시작됩니다. 메시지가 나타나면 "예" 를 누르십시오. 그러나 화면의 모든 메시지를 읽으십시오.

4 단계 : 즐기십시오

SPLnFFT Noise Meter 이 (가) 귀하의 기기에 설치되었습니다. 즐겨!

개발자 설명

SPLnFFT is a sound level meter (noise meter) for your iPhone or iPad with many advanced features: frequency analyzer, frequency meter, test signal generator, dosimeter, ... This soundmeter App is the only one for iOS recommended by the "Laborers' Health and Safety Fund of North America". Here are extracts from other reviews: "our favorite sound measurement app" SafetyAwakenings.com "SPLnFFT is comprehensive, easy to use" TapeOp.com You will find more reviews here: https://www.facebook.com/SPLnFFT For daily use, a very simple interface displays the level of exposure: if orange or red, protect your ears ! Professional users will take advantage of a wide range of accurate and reliable measurements: Leq, peak, L10, L95, taktmaximal, frequency analysis, histogram, dosemetering, ... A&C weightings are compliant with ANSI® S1.42 standard. "468" refers to ITU-R 468-4 *** Some KEY INFORMATION *** : - you absolutely need to allow access to microphone to use this App - screen rotation must be un-locked - there are built-in help messages (speech bubble). Need more ? Contact us !: email, blog, Facebook,... - do not expect to measure as low as 0dB(A) in a quiet room, for these 2 reasons: 30-130dB(A) is the standard usable range for sound level meters and anyway a standard quiet room is around 30dB(A) whereas a typical anechoic chamber is 10 to 20dB(A) Top digital display is for measurement of sound power in 'slow' mode (averaged on 1s). Central analog display is for 'fast' mode (averaged on 1/8th s). But it can display 'slow' mode as well on request: just click on 'fast' label. Peak and average values are displayed below and are held until you touch the 'reset' label. The videos on Youtube reveal more details. Bottom view is a real time FFT (frequency analysis). You will notice that predominant frequency and next one are highlighted. Their frequencies and relative power are displayed on the right. If your input signal is a pure tone then this App will lock on its frequency and display a very accurate result. Green line is the result of a real time FFT done with 1024 points. Purple line is the averaged FFT (exponential filtering done on power of each frequency). Blue line is a copy of what the purple line was when the user froze the display the last time. A test tone at 1kHz or a white noise or a pink noise can be generated and sent to right and/or left outputs (select the type you want in BEEP tab). This FFT view - more precisely an upsized version of it - can be exported as a picture in your own photo library, using the camera button (when display is frozen only). This picture can be exported in a mail as well. The display can be flipped upside-down to ease reading: just rotate your iPhone while holding it vertically. As for ALL sound meters (thus including this one and all others at any price), calibration is suggested if you want to reach extreme precision. This is enabled in this App thanks to a slider to apply some compensation and to three non volatile memories (choice to be made in MIC. tab). How to ? For calibration, you need and external reference, either a calibrated sound meter, or a calibrated noise source. Note as well that the tiny embedded loudspeaker cannot reproduce extreme frequencies. Thus if you want to hear a real white or pink noise, you will need to use a quality headphone or HiFi system. This App was designed seriously for our own needs, by a signal processing expert, and is regularly updated to maintain accuracy and reliability. ***** Any comment, any feedback ? Click on 'support' in iTunes: there is a blog for this. You can even contact us directly by email or through the dedicated FaceBook page (note 'send email' top right) *****