EVRC File – What is .evrc file and how to open it?

Definition and Properties

An EVRC file is associated with Enhanced Variable Rate Codec, an audio compression format developed by N/A. It utilizes adaptive differential pulse code modulation (ADPCM) to reduce the size of audio data, resulting in a smaller file size compared to uncompressed audio formats. EVRC files are commonly used for storing voice recordings and offer a balance between audio quality and file size. They are typically employed in applications such as voice messaging, mobile phone communication, and speech recognition systems.

Technical Details

EVRC files have a variable bit rate, which means that the amount of data used to encode each second of audio can vary depending on the complexity of the sound. This allows for more efficient compression, especially for speech-based audio, where periods of silence or low-energy sounds can be encoded with fewer bits. EVRC also employs a perceptual filter to prioritize the preservation of frequencies that are most important to the human ear, resulting in a higher perceived audio quality at lower bit rates.

Opening EVRC Files on Windows and macOS

EVRC files are audio files associated with the Enhanced Variable Rate Codec (EVRC) format, developed primarily for speech encoding in mobile communication systems. To open and play EVRC files on Windows or macOS, you can use various audio playback software that supports the EVRC codec. One common option is VLC Media Player, a free and open-source media player that can handle a wide range of audio and video formats, including EVRC.

Once you have installed VLC Media Player, you can open EVRC files by simply dragging and dropping them onto the player’s window or by using the “Open File” option in the File menu. Alternatively, you can right-click on the EVRC file and select “Open With” to choose VLC Media Player as the default program for opening such files.

Using EVRC Files in Other Applications

EVRC files can also be used in other applications that require audio playback capabilities. For instance, you can integrate EVRC files into presentations using presentation software such as Microsoft PowerPoint or Google Slides. By embedding EVRC files into your presentations, you can include audio narrations or sound effects that enhance your presentation’s overall impact.

Additionally, you can use audio editing software like Audacity to manipulate and edit EVRC files. Audacity provides a range of features for audio editing, allowing you to perform tasks such as cutting, pasting, and applying various effects to the audio. By utilizing audio editing software, you can customize and refine EVRC files to meet your specific needs.

Overview of EVRC File Format

The EVRC file format is an audio compression format developed by NTT DoCoMo for use in mobile phones. It is designed to provide high-quality audio at a low bit rate, making it suitable for use in applications where bandwidth is limited, such as mobile phone calls and streaming media. EVRC uses a combination of perceptual coding and vector quantization to achieve its high compression ratio while maintaining good audio quality.

Technical Specifications of EVRC

EVRC supports multiple bit rates, ranging from 4.75 kbps to 12.2 kbps. It uses a frame size of 20 ms and a sample rate of 8 kHz. EVRC employs a perceptual coding algorithm to remove inaudible information from the audio signal, and it uses vector quantization to encode the resulting signal. The vector quantization codebook is designed to capture the characteristics of human speech, resulting in efficient compression. EVRC also includes error correction capabilities to ensure reliable transmission in noisy environments.

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