AndroLib
Busca por Aplicativos Android ?
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 | Meus Favoritos
0 Número estimado de downloads de aplicativos no Android Market

Busque um aplicativo ou jogo para Android :

Você está aqui
Início > Aplicativos > Mídia e vídeos > SPL and Spectrum Analyser


Mais...Noticias da Androsfera

Chrome OS to get support for Camera RAW files
The latest promotional video for Chromebooks was all about being ‘for everyone, e...

Jorno pocketable Bluetooth keyboard shipping now at $79 introductory price
The Jorno keyboard began its life on Kickstarter back in 2012 with the promise of a poc...

Google’s Designed for Families program spotlights family-friendly apps and games
There are so many audiences being catered to with Android, but Google will be applying ...



Não perca os novos aplicativos!
Novos Aplicativos e Jogos
Jogos mais recentes
Aplicativos mais recentes



Aplicativos mais recentes

Jogos mais recentes


Top Free Apps Iphone
Mais... Páginas do AndroLib sendo exibidas agora
Em Destaque

Bubble Bl...
há 1482 seg. atrás

Killer ba...
há 2413 seg. atrás

Miami Nig...
há 2659 seg. atrás

kDisco ::...

Informações
Pontuação

3.69/5
(108 avaliações)

Código QR

Preço
~R$2,35
+/- 1.34€
+/- £1.21
+/- ¥182.95

Versão
2.9.3

Downloads
1 000-5 000
Estimado :
2.298

Tamanho
53.4 KB

Categoria

SPL and Spectrum Analyser

Disponível em:

Descrição fornecida pelo desenvolvedor

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.

Descrição do Android Market

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.

(If you need a more fully featured RTA, combined with a signal generator, take a look at the AudioTool app.)

Alterações recentes:
v2.9.2 Accuracy of frequency readout improved
       New "Keep Screen On" menu option
       App can now be installed to SD card

Avaliação do conteúdo: Todos


iPhone relacionados para SPL and Spectrum Analyser

SPL and Spectrum Analyser foi desenvolvido para Android por jjbunn

Nome do arquivo : com.julian.apps.SPLMeter

Permissões do sistema : 2 Clique aqui para exibir/ocultar a lista
  • android.permission.RECORD_AUDIO
  • android.permission.MODIFY_AUDIO_SETTINGS

Eu sou o desenvolvedor deste Aplicativo
|||||Email



Capturas de tela disponíveis para SPL and Spectrum Analyser


Conversas sobre SPL and Spectrum Analyser em nossos forums

Comentários e avaliações para SPL and Spectrum Analyser

Filtros :
Não há comentários sobre este aplicativo
... provavelmente vai gostar também destes
~R$1,98
TKWeek Versão 1.4.5
Need to convert between a week number and a date? with this app you can. want some information a... Por Thomas Kuenneth
Disponível em:
Grátis
蘑菇新闻 Versão 3.2
蘑菇新闻是android平台最快、最酷、使用人数最多的新闻阅读应用。 蘑菇新闻包含了最热门的网站,让您随时了解国内外大事、身边小事、朋友新事。 主要特点: 1. 流量省,强力压缩,节省流量6... Por moregoodmobile.com
Disponível em:
~R$1,67
Signal Status Bar (Ad Free) Versão 1.1.0
Shows your real signal strength in dbm in your status bar! you can also add your own signal bars... Por Modded Logic
Disponível em:
~R$1,55
CurrentWidget Donate Versão 0.36c
The widget displays how much electric current the device is using from the battery or receiving f... Por RmDroider
Disponível em:
~R$6,69
Electrical Wiring Pro Versão 4.9
28 (and growing) useful electrical tools wide coverage of national electrical code 2005 & 2008. ... Por Intineo LLC
Disponível em:
SPL and Spectrum Analyser for Android was rated by Android Market Users on : 3.7/5


Aleatórios...


Fundos de Tela aleatórios para Android...