Android Market in EnglishMarket Android en FrançaisAndroid Market en EspañolMercato android in ItalianoAndroid Market auf DeutschAndroid Market in EnglishAndroid Markt in het Nederlandse
中文版电子市场Android Market in JapaneseAndroid Market v ČeštiněAndroid Market на русскомAndroid Market em Português (Brasil)한국어 안드로이드 마켓Android Butiken på svenska
Dev corner | お気に入り
Androidマーケットでダウンロードされたアプリケーションはのべ 0

Android用アプリケーション/ゲーム検索 :

ホーム > アプリケーション > マルチメディア > SPL and Spectrum Analyser

Your Application or Game here


オリジナルステージを作れる!公開できる!ハマる2Dアクションゲーム! : 忍ツク!
【アプリの特徴】 簡単な操作でステージを自作できる! 自作したステージを公開して遊んでもらえる! アイディア次第で様々なステージが実現可能! 続きを読む The post オ...

路線カラー対応で分かりやすい!電車やバスの発車時刻をカウントダウンしてくれるアプリ! : トレインタイマー
アプリの特徴 電車やバスの発車時刻をカウントダウンしてくれる! 路線カラーに対応しているのでリストがいっぱいになっても探しやすい! バスの時刻表やオリジナルの時刻表作成にも対...

移動回数が表示されている上に、レベルが表示されるようになりましたね。 気づいてましたか? プレイしている時は、レベル表示はあまり必要ないかもしれませんが、個人的にはかゆいとこ...




もっと見る... 丁度今閲覧されているページ

Bubble Bl...
1641 秒前

KLPGA 골프 ...
2120 秒前

4408 秒前

Arch Thai...


(108 件の評価)


+/- 1.34€
+/- £1.21
+/- ¥182.95


1 000-5 000
概算 :

53.4 KB


SPL and Spectrum Analyser

入手可能地域 :


SPLMeter monitors sound picked up by the mic on your Android device and converts it to an SPL in deciBels, as well as showing its frequency composition as a spectrum. The meter has three speeds: Fast, Medium and Slow. Peak spectrum can be shown as well as the detected frequency of maximum strength, in Hz.

Operation Details
Input audio data from the microphone is read out as 16 bit PCM samples at a sample rate of 22,050 samples per second. This sets the maximum detectable SPL level to 90dB (equivalent to 20log(65536)), and the maximum detectable frequency to around 10kHz.

A calibration adjustment is made internally that matches the dB SPL shown by SPLMeter to that measured by the Ivie Technologies IE35 professional grade meter. Metering uses an exponential filter whose speed can be adjusted to Slow, Medium or Fast using a button on screen.

The PCM samples are sent to a FFT in batches of 2048 ... this fixes the lowest detectable frequency to around 10Hz. The frequuency spectrum is plotted on a Hz log scale in the standard way, with dB levels shown on the vertical axis for each point.

The frequency at which the maximum value of SPL is detected is shown on the display, and its position indicated with a small downwards pointing arrow.

The application also shows the real time audio PCM signals as they are collected from the Mic via the Android device's audio subsystem. These are plotted on the lower display from left to right, as a function of time. This display auto scales as a function of the maximum detected signal level.

Buttons are provided that allow the display to be paused and to show or hide the peak measured spectrum.

If the mic signals clip due to overload (very loud noise) then the Mic sample display background changes to red.

Processing Speed
The number shown immediately after the "Mic" legend indicates the frame rate of the application, in milliseconds - in other words the time for data collection and processing ... ideally, at the chosen sample rate, this should be around 200ms, but will vary depending on the speed of the Android device's processor and whether other applications are taking shares of the CPU. On the Motorola Droid it runs at around 250ms, on the HTC G1 it is slower, around 800ms.


V2.9: Improved stability on rotate.

SPLMeter shows SPL (deciBels) of the Android's mic signals, and their frequency spectrum. The meter has three speeds: Fast, Medium and Slow. Shows peak envelope and frequency of maximum intensity, and clipping. ISO 1/3 Octave bars and Spectrogram.

iPhone用に関連するSPL and Spectrum Analyser

SPL and Spectrum Analyserjjbunn によって開発されました

パッケージ名 : com.julian.apps.SPLMeter

セキュリティ権限 : 2 表示/非表示切り替え
  • android.permission.RECORD_AUDIO
  • android.permission.MODIFY_AUDIO_SETTINGS


SPL and Spectrum Analyser のスクリーンショット

フォーラムにおける SPL and Spectrum Analyser に関するディスカッション

SPL and Spectrum Analyser に対するコメントと評価

フィルタ :
... これらのアプリもオススメです
TKWeek バージョン 1.4.5
Calculates week number of a date. finds 1st/last date of a week. number of days betw. dates. info... デベロッパー Thomas Kuenneth
入手可能地域 :
MoreGood News バージョン 3.2
Moregood news reader is the quickest news reader. you may browse latest news from various sourc... デベロッパー
入手可能地域 :
Signal Status Bar (Ad Free) バージョン 1.1.0
Shows your real signal strength in dbm in your status bar! you can also add your own signal bars... デベロッパー Modded Logic
入手可能地域 :
CurrentWidget Donate バージョン 0.36c
A widget that display the electric current draw or charge. the values can be logged for battery r... デベロッパー RmDroider
入手可能地域 :
Electrical Wiring Pro バージョン 4.9
27 electrical tools o pirewheel o motor - wire, fuses... - flc, lrc, kvar - dimensions o xform... デベロッパー Intineo LLC
入手可能地域 :
SPL and Spectrum Analyser for Android was rated by Android Market Users on : 3.7/5