TLV320AIC12IDBTG4 vs CS42428-CQZ
| Part Number |
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| Category | Interface - CODECs | Interface - CODECs |
| Manufacturer | Texas Instruments | Cirrus Logic Inc. |
| Description | IC CODEC 1CH 16 BIT 3.3V 30TSSOP | IC CODEC 8CH PLL 192KHZ 64-LQFP |
| Package | Tray | Tape & Reel (TR) |
| Series | - | - |
| Type | Voice-Band | Audio |
| Operating Temperature | -40°C ~ 85°C | -10°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 30-TFSOP (0.173\", 4.40mm Width) | 64-LQFP |
| Supplier Device Package | 30-TSSOP | 64-LQFP (10x10) |
| Resolution (Bits) | 16 b | 24 b |
| Data Interface | Serial | Serial |
| Voltage - Supply, Analog | 2.7V ~ 3.6V | 4.75V ~ 5.25V |
| Voltage - Supply, Digital | 1.65V ~ 1.95V | 3.13V ~ 5.25V |
| Number of ADCs / DACs | 1 / 1 | 2 / 8 |
| Sigma Delta | Yes | Yes |
| S/N Ratio, ADCs / DACs (db) Typ | 84 / 92 | - |
| Dynamic Range, ADCs / DACs (db) Typ | 85 / 92 | 114 / 114 |
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1. What are audio codecs used for?
Audio codecs are mainly used to compress and decompress digital audio data for easy storage and transmission. During the compression process, the codec removes redundant information from the audio to reduce the amount of data; during decompression, this information is restored to restore the original audio quality.
How Audio Codecs Work
The audio codec consists of two parts: encoding and decoding:
Coding: compressing the original audio signal into a smaller amount of data for easy storage and transmission. Compression methods include lossless compression (such as APE, FLAC) and lossy compression (such as MP3, AAC). Although lossy compression will lose some audio details, it can significantly reduce the file size.
Decoding: Restore the compressed audio data to the original audio signal to ensure that the sound quality is not damaged or the loss is minimized. -
2. How many codecs are there?
There are many types of codecs, and it is difficult to count their exact number. Codecs are mainly divided into the following categories:
Video codecs: such as H.264, H.265 (HEVC), VP8, VP9, AV1, etc., used for compression and decompression of video data.
Audio codec: such as MP3, AAC, Opus, FLAC, etc., used for compression and decompression of audio data.
Image codecs: such as JPEG, PNG, WebP, etc., used for compression and decompression of static images.
In addition, there are some codecs designed for specific application scenarios, such as ProRes, DNxHD, etc. -
3. Why are codecs important?
Codecs are important because they play a key role in data compression, transmission efficiency, and user experience.
The basic concepts and functions of codecs
Codec is a compound word of "encoder" and "decoder", which is responsible for compressing and decompressing video and audio signals. During data transmission, the encoder compresses the original data into a format suitable for transmission, while the decoder restores the compressed data to the original data. The codec reduces the size of data through algorithms, thereby reducing the bandwidth required for transmission while ensuring data clarity and transmission efficiency.
Application of Codecs in Live Video and Video Conferencing
In high-definition video live broadcast, the codec uses compression algorithms to reduce the bandwidth requirements of the video stream, ensuring video quality while reducing transmission delays. Different codecs, such as H.264, H.265, and VP9, have their own advantages and disadvantages. Choosing the right codec is crucial to the user experience of the live broadcast platform.
In video conferencing, the codec ensures clear transmission of audio and video, reduces network bandwidth usage, and ensures the quality of audio and video. Modern codecs use technologies such as adaptive bit rate streaming (ABR) to adapt to network changes and ensure smooth calls
Technical Challenges and Recent Advances in Codecs
Codecs face challenges such as bandwidth fluctuation, delay, and packet loss in practical applications. To address these challenges, modern codecs use advanced technologies such as H.265's dynamic adjustment of video resolution and bit rate, as well as noise suppression and echo cancellation techniques. In addition, new codecs such as LHDC (Low-Latency Hi-Definition Audio Codec) provide higher sound quality and lower latency, suitable for wireless audio transmission. -
4. What are audio codecs used for?
Audio codecs play a vital role in audio transmission and processing. Their main functions include compressing and encoding audio data for efficient transmission and storage with minimal loss of sound quality.
Basic functions of audio codec
Compression and decompression: Codecs compress audio data into smaller file sizes for easier storage and transmission. The receiving end then decompresses the compressed data and restores the original audio quality.
Encoding and decoding: The codec converts the analog audio signal into a digital signal (encoding), and then converts the digital signal back into an analog signal (decoding) at the receiving end so that the playback device can process and output the sound.
Performance differences between different codecs and their impact on sound quality
SB: The most basic codec, supports 16-bit/44KHz audio, and has a maximum bit rate of 328kbps. Although it has a high penetration rate, the sound quality is relatively average.
AAC: A codec developed by Apple that supports higher bit rates and better sound quality and is commonly used in devices such as iPhones and iPads.
AptX: A codec developed by Qualcomm that supports high-fidelity audio transmission and is suitable for devices that require high-quality audio.
LDAC: A codec developed by Sony that supports transfer rates up to 990kbps, provides near lossless sound quality, and is commonly used in Sony devices.
LHDC: A high-performance codec that supports 24-bit/192KHz high-definition audio transmission with a maximum bit rate of 1Mbps, providing an excellent sound quality experience.
