Impulse Response APK + MOD (Paid for free,Free purchase) v1.9

Main Content

• Mod info
• Impulse Response Details
• How to download & install
• Safety statement

Mod Information

Paid for free

Impulse Response App Detail

Turn your Android smartphone into a powerful tool for measuring the Impulse Response of audio systems.

This app will only be of interest to those who understand what an Impulse Response is!

The app generates an MLS signal from the speaker (or headset jack) and records it via the microphone, and then calculates the response of the system as a function of frequency and as a time series. The MLS signal is an alternative method to the usual sine wave sweeps, and in many ways superior.

The IR can be saved as a 44.1kHz 16bit Mono WAV file for use with third party tools such as Voxengo that use Impulse Response data.

The display shows the realtime spectral response together with the derived impulse signal as well as the step function. The spectrum can be shown in 1/1, 1/3 or 1/6 ISO octave bands, or in full pixel resolution. Another display shows the Phase of the impulse response as a function of frequency: the phase is unwrapped. The level (dB), frequency (HZ) can be adjusted via the Menu. An automatic time window feature homes in on the time region around the impulse - the duration of the window can be adjusted via the Menu.

The impulse and phase signal can be averaged, if desired. Spectrum response as well as the time series of the impulse response data can be saved in a file to the SD card for later retrieval, or offline processing (the files are simple text files easily imported into e.g. Excel), and shown alongside the realtime spectrum data.

To test the response of audio equipment, the MLS signal may be fed into its Line In input via a cable attached to the phone's headset jack. If a higher quality external microphone is to be used it can easily be attached using a Y breakout connector in the headset jack.

The MLS (Maximum Length Sequence) signal is much better than a simple pulse signal in that it has a greater power density and thus causes the equipment under test to operate in a more usual regime by exciting the whole frequency spectrum at once. This app uses a Fast Hadamard Transform to calculate the necessary convolution of the recorded signal with the MLS in order to extract the impulse response of the system.

Feedback and/or questions/problem reports are most welcome - please send email.

(If you require an Android-based SPL meter, Signal Generator, RT60 meter and Spectrum Analyser, please see our AudioTool app, also in Google Play.)

How to download and install Impulse Response Mod APK :

Open your phone's settings and go to the "Security & Privacy" option.

Find the option of "Unknown Sources" and turn it on (skip this step if it is already turned on).

Download and find Impulse Response Mod APK to be installed, which can be downloaded through a computer or mobile browser.

Click the downloaded APP installation package, the system will prompt whether to allow the installation of the APP, click "Continue to install".

During the installation process, the system may prompt that the APP needs to access certain device permissions, and the user needs to authorize according to the APP functional requirements.

After the installation is complete, you can find Impulse Response MOD on your Android device, and click to use it.

After the installation is complete, it is recommended to turn off the "Unknown Sources" option to prevent other malware from being installed on the device in a similar way.

Notes:

To avoid downloading and installing malicious programs, please try to download apps from official websites or trusted app stores.

Before installing the APP, you should check the permissions of the APP first, and do not easily authorize high-risk permissions to avoid leaking personal information.

Regularly update and upgrade the APP to fix possible bugs and weaknesses.

After installing the APP, it is recommended to install anti-virus software to strengthen device protection and security.

Safety statement

Impulse Response Mod APK has been tested and verified by multiple mainstream antivirus software to ensure that it does not contain any malicious programs or viruses. We will constantly update and strengthen security measures to protect user data and privacy.

However, since Impulse Response Mod APK comes from an unknown source, there are certain security risks. Therefore, we recommend that users carefully understand the functions and permissions of the APP before downloading and using it, and perform antivirus detection and upgrade operations on mobile phones or computers to avoid installing and using possible malicious programs.

At the same time, we also remind users to pay attention to the following safety precautions:

Download and install APPs should be obtained from official websites or trusted channels, and try to avoid downloading and installing from informal channels;

Do not install apps from unknown sources, and try to avoid using apps from unknown sources;

Do not easily authorize APP to access your private information and device permissions, including address book, camera, location, etc.;

Regularly clean up useless files and caches in your phone or computer to avoid excessive occupation of system resources and impact on device performance;

Upgrade operating systems and software versions in a timely manner, and patch security loopholes and weaknesses.

We attach great importance to the security and privacy of users, and will do our best to ensure the security of users' data and information. Thank you for your understanding and support