Bugs and feedback to: email@example.com
• Visualizes whatever music or sound is coming from any other app.
• Dramatically displays artist name and track name for most popular music players.
• Extensive color and shape options to tweak
• Save your settings as themes, and use the included Tasker / Locale plugin to load any of your saved themes in response to almost anything you can imagine.
• Glistening particles keep the screen alive with motion even when music isn't playing (can be turned off)
• Shortcut button to link to your favorite music player, as well as built-in play/pause/last/next controls for whichever music player app is running.
NOTE FOR GALAXY OWNERS: If it doesn't react to music, see the free app, Tunnel Blocker.
NOTE FOR NEXUS OWNERS: On some devices, mostly Nexus brand, audio from OpenSL-based players won't visualize. These include but are not limited to: Poweramp, jetAudio, WinAmp, PlayerPro with DSP pack installed, Rocket Player Premium, GoneMad, and Neutron. If you run into this problem, I apologize! Please email me and I will refund you.
Audio from any app will be displayed, but only the following are known to also show meta data. Additionally, more may work if they have an option to turn on scrobbling. Email me if you'd like to see meta data from an app that isn't supported yet. Unforunately, this is not yet possible with iHeartRadio or DoubleTwist. See cyphercove.com for a list of apps currently known to share meta data with Audio Glow.
IMPORTANT: it shows spectrum only for internally played music but not for FM radio or mic, if you have any problems, email me
Make from your phone or tablet a spectrum analyzer for your music.
It show frequency spectrum of music played from your favorite music player running in the background.
Frequency spectrum is shown in logarithmic scale on X approximately from 43Hz to 22kHz and on Y from 0 to -50dB.
You can change the color by long pressing the display.
This app is very simple without any settings and don't use any extra permissions except for audio.
If you like this, you can buy Spectrum Analyzer 2, where is added settings and some enhancements and which cost less than one beer.
Analyse captured audio from microphone in three separate panels:
- Osciloscope (time domain),
- Spectrum (instantaneous frequency domain),
- Spectrogram (accumulative frequency domain).
You can display all panels at once (default screen). If you want to see each panel at full-screen, you can simply click on panel and it will be shown full-screen with additional settings that can be changed by pressing buttons. Display can also be paused to take screenshots.
In Spectrum panel values of one or five leading frequencies can also be displayed. Linear or Logarithmic magnitude scale can be chosen. For better peak frequency estimation, special algorithm is applied.
Please share your experience with us. We will do our best to make this application better.
The internet permissions are used for ads only.
-FFT resolution from 32 to 65536
-9 window algorithms to reduce spectrum leakage
-fast pause/resume button
-day or night mode
Note that amplitude value is not displayed because would cannot be accurate without calibration for your device.
The output is a display in the form of an image that represents the frequency spectrum of the audio as it changes in time. Intensity is plotted on a rainbow log scale. Red represents a strong signal, blue a weak signal. A linear gray scale is also included.
Options are available via the Android Menu key. The user may toggle a grid to overlay the spectrogram. The spacing between vertical lines is 2000 Hz.
This spectrograph collects 1024 samples at a sampling rate of 44,100 Hertz every 150 milliseconds. Each collection of 1024 samples corresponds to a single horizontal line in the display as shown in the actual screenshots. A moving set of gridlines is added just ahead of the most recent horizontal line of data so the user can measure frequency. These lines are 2 KHz apart.
The Spectrogram frequencies may be verified by using the AndWaves AudioGenerator software to play tones or by playing a YouTube video of test-sounds (free) at: http://www.youtube.com/watch?feature=player_embedded&v=i_M46ysxMEg
The feature graphic on the Android Marketplace shows the “sound prints” of various activities, including those of cricket chirping. The phone itself seems to introduce an noise into the spectrum around 10 and 12 KHz, as well as thin lines at 7,200 and 14,400 Hertz.
Have fun looking at the “sound prints” of ordinary things. To learn more about frequency spectra see the one-page tutorial on our website, https://sites.google.com/a/andwaves.com/www/home/about-fourier-transforms
The program uses the new Google licensing standard. In theory this means the program can be copied to an SD card, freeing up internal memory in the Android, although I haven’t tried it.
If you need help or would like to discuss your application, I will be happy to spend a few minutes with you on the phone (321.252.8205).
- high dynamics with 20 FFT analysis per second
- auto or manual scale
- log (dB) or linear scale for the amplitude
- log or linear scale for frequency axis
- selectable FFT windowing: flat top, Hanning or rectangular
- zero-padding for better FFT frequency resolution
- selectable sampling frequency, up to 48000 Hz
- performance factor for slow phones
- zoom on the frequency and time axes (drag the axis to zoom)
- multitouch zoom
- cursor on the spectrogram with or without frequency sound reproduction
- innovative auto calibration method, using the in-built speaker. The calibration file can be manually edited with a simple text editor
- editable calibration file
- portrait and landscape display
- rms value of the signal over the displayed frequency range
- overlay with music notes
- no publicity
So do not hesitate any longer and install this app.
Please feel free to comment or post a question on the dedicated Google Group:
Of course a direct e-mail is also possible
All comments are very welcome.
If you like the app, please rate it.
Features only available in the PRO version:
- recording time only limited by the device memory
- save sound file as WAV or CSV
- read WAV file for offline analysis
- save spectrogram as high definition PNG
- 3D Waterfall display
If in doubt, check our free RTA .
Bugs, comments to: firstname.lastname@example.org
- Sound = pretty colours
- Working out what needs to change in a mix to make it sound right
- Measuring the impulse response of a room before recording to find the best microphone placement
- Articulation therapy. This is currently the direction I'm most interested in going in and am looking for feedback on this use especially, please send me an email with your comments.
showing the spectrum of the audio signal near the phone.
You can see the visualization of your voice or music. Additionally it will display frequency of the loudest signal.
Can be used to test your instruments, check your football whistle frequency, and
even tune your piano, guitar or other string instrument."
Features real-time smooth high framerate spectrum diagram! Frequencies between 20Hz and 20kHz!
Scale is logaritmic, what is best for human perception.
Software is using FFT internally.
This application is using advertisement, but it will not create icon or bookmarks on the desktop. We are also not using any push advertisement.
Measure the frequency response of your audio equipment, identify tones and noises.
Bugs etc: email@example.com
This real-time spectrum analyzer / audio visualizer features:
- 128 high-quality frequency bands [20Hz to 22kHz]
- Logarithmic frequency scale to match human perception
- Low latency for high responsiveness
- High framerate to see smooth frequency and amplitude movements
- High performance native code using OpenGL ES 2.0
- FFT window size 2048 @ 43/58(Armv7+) frames per second
The internet permissions are used for ads.
Any feedback is welcome.
ProSpec - Lite is a basic Real time spectrum analysis tool. It generates a spectrogram on the fly and supports 8kHz and 44.1kHz sampling frequencies.
You can record, playback, save and share the spectrogram for a given time frame. It provides a maximum frequency tracking facility with measurements both in dBFS, (SPL in paid version only).
Other features include:
- Time scale in seconds
- Update speed
- Dynamic range control
- Complete color customisation
- RGB option
- For audio engineers, an invert feature for live events in dark rooms
- Audio tool, allowing you to share, save and listen to the complete audio that has been recorded
- Saving, sharing and exporting the configuration (i.e. analysis settings: window size, dynamic range, FFT length and analysis window)
NOTE: If you are not satisfied or find any issues with ProSpec, please tell me in the discussion group before leaving negative feedback, I may be able to resolve your issue in an update and your input will be invaluable to ProSpec's evolution. Thanks!
home theatre, audio engineer, car audio, linguistics, speech pathology, electronic engineer, tech savvy musicians, engineering and audiologist students
- FFT size fixed to 1024 for 8kHz and 512 for 44.1kHz
- Uses a moving window to calculate the FFT Magnitude spectrum
- Uses Hamming analysis window
- Frame Length fixed to 32ms
- Frame shift fixed to 14ms
- Dynamic range: -1dB to -90dB
- Bandwidth available: 50Hz - 22.05kHz
- Selectable update time from (10-40s)(also depends on frame length)
- JET RGB color scheme (and many many many others)
- Free version has watermarked images when saving or sharing
WORD FROM THE DEVELOPER:
I developed this tool to use personally and I believe it has some use to others in the community. ProSpec also has some major advantages over other real-time spectrogram apps available for free. e.g. time scale (x-axis labels), saving settings and sharing the audio and images, and maximum frequency tracking. These are all features I wanted a single tool to have, unfortunately all others seemed to fall short, hence ProSpec has been developed to accommodate my needs, and hopefully yours.
Tested Devices (Better suited for dual core devices):
Motorola Xoom with Android 4.0.4 (Good)
Samsung Galaxy S III (Quad core, AU release) with Android 4.0.4 (Good)
Sony Xperia with Android 4.0.4 (Good)
Motorola Atrix 2 with Android 2.3.6 (Good, must have sdcard installed)
HTC Desire HD with Android 2.3.5 (A bit slow)
Motorola Atrix with Android 2.3.4 (Good)
HTC Incredible S with Android 2.3.5 (A bit slow)
BUGS AND REPORTS:
Apologies for incompatibilities on devices other than the ones listed above, I have limited resources and don't have access to the thousands of phones and tablets out there. If you find any bugs or issues please take the time to e-mail me (firstname.lastname@example.org) and include what you were doing at the time the bug occurred.
Like image was synthesised from accumulating sine waves into an audio file.
Recommended by "Sound and Vision" magazine.
Features 1/1, 1/3 & 1/6 octave RTA modes, Leq (wideband, Octave, variable duration), RT60 (wideband, Octave), Spectrogram, Peak frequency, Fast, Medium & Slow filters, Flat & A/C Weighting and film industry X Curve, Averaging, SPL Chart Recorder, Noise Criteria, White/Pink Noise, Sine, Square, Triangle, Sweep, Ramp and Impulse signals & loudspeaker polarity checker, L/R select. RTA Store & Load, Hann windows, "Keep Screen On", pinch to zoom, scroll to center.
Exclusive ISO 1/3 Octave Calibration - correct for your phone's microphone response. Octave calibration discs are moved up or down to obtain a flat response, and match the overall SPL to that of an external meter. Save/Restore of Cal files (Dayton Audio iMM-6 also supported).
Use: home theater, audio engineer, car audio, etc
AudioTool FFTs sets of samples recorded at the microphone. Aliasing reduced by Hann windowing. SPL calculated in realtime. Spectra may be saved as files on the SD card, then loaded and displayed with the live spectrum. The "Store" button stores the current live spectrum - "Load" shows a list of stored spectra to select.
To hide the buttons, tap the screen. To restore them, tap again. To zoom the scale, pinch the screen. To move the scale, drag it up or down (left or right).
The deciBel meter uses IIR filters and exponential averaging to calculate Flat, A and C weighted response at speeds of Fast, Medium and Slow speeds.
A pair of cursors can be shown on the RTA and Chart Recorder displays: each can be moved to any position, and will display the SPL & time/frequency values there. Initially, both cursors are positioned mid-screen - simply drag them to a new position with the fingertip. The cursors can be turned on and off in the Menu.
The loudspeaker polarity checker can be used to check whether a loudspeaker is wired in phase: connect the AudioTool output to the speaker under test, select "Polarity" from the signal generator screen, then return to the RTA screen. If the speaker is out of phase (polarity reversed) AudioTool will show "Pol ---", otherwise "Pol +++" if the speaker is in phase.
The Noise Criteria (available from the Menu) function shows a set of NC contours overlaid on the 1/1 Octave RTA display and the calculated real time current NC value is also shown.
The Chart Recorder shows a moving trace of the SPL measurements over the last few minutes.
RT60 measurements can be made by starting the RT60 component using the "RT60" button, and then using a loud clap (or similar) to trigger the measurement. RT60 can also be used with Pink Noise from the AudioTool generator. RT60 times measure how much reverberation or echo there is in a room or auditorium.
The Signal Generator generates White and Pink Noise, Sine, Square, Triangle and Ramp waves, Sine Wave Sweeps and Impulses. The generator uses multiple cycled buffers, refreshed randomly so ensuring truly random White/Pink noise. Pink Noise algorithm uses Kemmet's method to adjust White into Pink.
The frequency accuracy of the generated periodic signals is typically around 1%. Sine wave fidelity is good throughout most of the audio range. Other signals' leading and trailing edges show ringing and decreasing frequency response artifacts in the upper ranges, depending on the Android used.
Please consult the online manual for complete descriptions of the AudioTool features:
Please join the friendly AudioTool Discussion Group to request features, find Calibration files, or report problems. Feedback is always welcome:
Disclaimer: AudioTool's performance depends on your Android hardware, and is not guaranteed to meet any audio measurement or safety standards.
(If you need a more fully featured RTA, with 1/1, 1/3 and 1/6 octave display, RT60, Noise Criteria, A&C Weighting etc. combined with a signal generator, please take a look at my "AudioTool" app in Android Market.)
Features in Free Version
* No Ads
* 44100 Hz sampling rate
* 8192 samples per spectrum
* ~5.4 Hz Resolution per point
* Peak Detect of whole spectrum and your local window
* Pinch to Zoom
* Tap to Pause
* Max Hold
* Take Screenshot
* Share on Facebook, Gmail and many more
Features in Premium Version.
* Limited time 99 cent app! Will increase price as more features are added.
* Help out the developer to keep adding more features!
* Beta Log Frequency Scale
* Adjustable sample rate from 8000 Hz to 48000 Hz
* Adjustable Size of FFT up to 100000 samples
* Not limited on Power of 2 sized FFTs (Must be even though)
* Adjustable Manual Scale
If you purchase the app and don't like it contact me for a refund.
Contact on Reddit: Raspberrywood
Free Version Features:
* Multi-Touch Zoom/Pan * Display up to 3 minutes of continuous recording * Save as Image * Load previously saved Images * Change Spectrogram Colors * Easy Auto-Level / Max-level
Paid Version Features:
* Set Sampling Frequency/Window Size/Window Type * Show dB/Amplitude * Spectrogram smoothing * Export data to Matlab
What is a Spectrogram?
Every signal is a combination of unique frequencies, and can be disassembled into its frequency components. ("Frequency Spectrum")
A Spectrogram is a technique that is used in Audio Analysis (Spectral Analysis) to see the real-time behaviors of signals. It plots the frequency components of the signal over time.
The bar on the left shows the frequency (in [Hz]) and the color is the intensity of that frequency.
For non-techies - AndroSpectro is the simplest spectrogram app available. Just press the "Play" button. Feel free to Zoom-in/Pan using multi-touch gestures. You can also easily set the Maximum level or press 'auto' for auto-leveling.
For techies - AndroSpectro gives you control over every parameter you can think of. Display up to 3 minutes of continuous recording history and save as an image for later viewing.
For mega-geeks - Export the raw Spectrogram data to Matlab for further analysis. Your phone becomes your handheld input device for advanced audio analysis. (We wish we had it as a student)
Goto http://androspectro.com/matlab for more info
Please give us feedback so we can improve the app!
The AndroSpectro team