Tda patent analysis

iAUDIO 9

It has a spraying effect of 3.0&; BBE+* * * iAUDIO 9 with 35 sound effects only costs 798. I9 is equipped with a 2.0-inch 260,000-color 320x240 resolution display screen, which can play MP3, WMA, FLAC, OGG, APE, WAV and other audio formats.

Apple clip

The redesigned iPod shuffle is equipped with clickable control panel buttons and Apple's innovative VoiceOver technology, so users can easily navigate their music and playlists without watching. Now this product has been listed in China, and the latest offer is 378 yuan.

Sony NWZ-S754

NWZ-S754 MP4 player, this product adopts Sony's unique high-definition audio technology and digital noise reduction function, which can not only reduce most environmental noise, make music clear and distinguishable, but also play music continuously for up to 50 hours, showing Sony's strong product design ability and technology research and development strength. Now the latest market quotation is 8GB/949 yuan.

NWZ-S754 player adopts high-definition audio technology: digital audio enhancement technology (DSEE), clear stereo and clear subwoofer. With the attached 13.5mm EX earphone, the low frequency can be strong and vigorous, and the middle and high frequency can be clearly dialyzed. When users are in the office, bus or plane, they will be disturbed by environmental noise, which will affect the entertainment experience of audio and video. Sony NWZ-S754 player's built-in digital noise reduction system can provide a variety of noise reduction settings. With noise reduction headphones, it can eliminate most environmental noise and make the audio-visual experience more real and clean.

Samsung YP-R 1

Samsung products cover most of the products in today's digital market, and they are at the forefront of technology. In the field of players, Samsung is one of the few companies that dare to compete with first-line brands such as Apple. Samsung YP-R 1 makes the touch wind popular. At present, YP-R 1 with 4GB capacity has been quoted by dealers at 703 yuan.

The front of P-R 1 is matched with a 2.6-inch TFT screen of160,000 colors, covered with an acrylic panel protection layer, and the black volume adjustment button is below, which is simple and beautiful. Although the screen is small, the resolution of 400×240 keeps the screen display smooth, clear, delicate and soft in color.

YP-R 1 supports WMA, MP3, OGG, AAC, FlAC and other audio formats. The biggest highlight of Samsung audio equipment is that it is equipped with DNSe sound effect settings, and adopts 5. 1 audio DSP sound effect technology of Samsung home theater system, so that portable MP3 and MP4 audio can achieve good surround sound stage effect. Now the DNSe sound effect has been upgraded to version 3.0, which strengthens the restoration of the damaged sound quality during compression and strengthens the bass part. The biggest breakthrough is that DNSe3.0 sound effects can analyze the style of music and choose EQ by yourself.

Samsung YP-R 1 supports the decoding of common formats such as RM, RMVB, AVI and H.264, with clear picture quality and smooth playback. Generally, there will be no color dragging or jamming during playback. The exquisite YP-R 1 also has many special functions built in. In addition to the regular e-book reading, FM radio, recording, Beat DJ and Bluetooth functions, it also has four built-in games. The game interface is gorgeous and playable, which is a good choice to kill leisure time.

Innovation Zen X-Fi2

At present, there are not many pure-tone MP3 players on the market, and the real sound quality can make everyone full of praise. Among them, the innovative X-Fi2 is one of the products with the same outstanding sound quality within 1,000 yuan. Now the price of the merchant is 859 yuan.

ZEN X-Fi2 is a brand-new upgraded version of ZEN X-Fi player, which naturally inherits the sound technology of X-Fi and optimizes it. The industry-leading X-Fi ultra-fidelity sound effect will bring more full and realistic sound field performance and more musical details to users. With the innovative and original EP-630. The sound performance is outstanding, which can be comparable to the sound card to some extent.

Iriver N20

As one of the few MP3 players with moving iron as the standard earphone, iriver N20 has been recognized by countless friends for its necklace-like appearance and exquisite body design. Relying only on iriver's solid tuning technology, this product has a good auditory performance. Now the price of N20(2G) (picture review of quotation parameters) is only in 550 yuan.

As a top pure tone player, this N20 will adopt many new technologies to improve the sound quality. Iriver's patented technology named IESE can show a sound field close to reality, and the low frequency is enhanced, which makes the scene feel stronger. Built-in high-performance processor provides pure sound quality and higher signal-to-noise ratio.

Audio formats support MP3, WMA, APE, FLAC, OGG and other common formats, and the built-in lithium battery can support 15 hour playback. In terms of modeling, N20 is iriver's latest N series product. The necklace is elegant in design, and the whole machine is only the size of a fruit candy, which is very beautiful.

Taipower T5 1

The release of Taipower T5 1 Five-Core Hi-Fi MP4 can be said to be a big news in the digital player market recently. This product, which is specially designed for HiFi music enthusiasts, has a brand-new five-core architecture and extremely high sound quality performance. After long-term market sales, the price has dropped a lot, and the current price is 7 1 1 yuan.

Taipower T5 1 has only one core goal in planning and design, and that is to provide the best sound quality performance. This is a rare high-quality digital player with the best sound quality as its selling point, and it is a rare good thing for hi-fi enthusiasts who like excellent sound quality. In order to obtain excellent sound quality, Taipower T5 1 gave up the functions of frequency modulation, recording, external playback and so on, which have an impact on the sound playback circuit. Combining the excellent EQ and TF card expansion functions of T5 1, all the designs show that T5 1 is a professional digital player with high sound quality.

The most exciting thing about Taipower T5 1 is its five-core hi-fi sound quality music playback circuit. Referring to the design of hifi products, it adopts the design of independent conversion of dual-channel DAC. But also chose two independent wm8740 DAC digital-to-analog converters with excellent reputation! In addition, a buffer amplifier stage consisting of the best OPA2604 operational amplifier and an independent TDA 1308 power amplifier IC is added.

Because the signal-to-noise ratio of the T5 1 chip is as high as 120db, and it has the function of LINE-OUT, T5 1 is not only a high-quality walkman player, but also can be used as an analog sound source to connect a power amplifier and an active speaker.

Taipower T5 1 can directly play FLAC and APE music without conversion, and support CUE track segmentation! It is the best digital player supporting lossless music at present. You can take it with you and enjoy excellent sound quality music. The performance of T5 1 won't disappoint your harsh ears.

Philips spark

Spark is Philips' most classic portable pure-tone MP3, whether it's a full mirror body or a CD-level restored flying sound effect. Or the detachable back clip design has become the reason for everyone's concern. Now the price of Spark is 379 yuan.

Who says MP3 sound quality is inherently inferior to CD? Philips Spark gives MP3 a clear and moist texture! This machine supports MP3, WMA lossy format and FLAC, APE lossless format, which fundamentally ensures the purity of sound quality. In addition, it has built-in FullSound, which is a signboard. By extending the high and low frequencies and adjusting the details, the inherent digital taste of MP3 format can be effectively eliminated, and the pure sound quality of CD level can be realized.

1, 2G/239 yuan Philips Mix II (III is the latest listing)

The Mix III uses an in-line USB interface and does not need a data cable. The USB cap is connected with the machine body, which completely avoids the loss of the cap and affects the overall beauty of the machine. In addition, it also has daily practical functions such as music, FM radio, recording, folder viewing, volume limit and so on.

Mix II attracted the attention of some players because of flying sound effects. Mix III not only continues Philips' FullSound, but also supports APE and FLAC audio formats besides common audio hard decoding.

2.iriverT8 reference quotation: 249 yuan /2GB, 299 yuan /4GB.

With the high-definition sound effect of SRS WOW, it is more worthy of the title of "music wand". The front of the iriverT8 fuselage adopts a cross-like button design, and the upgraded four-position UI button can be operated with one hand. In order to improve the practicability of the machine, iriver also added the design of T5 USB plug-in to avoid the complicated USB data transmission, and the collocation of key caps also greatly avoided the dust falling.

In terms of function, iriverT8 supports audio playback in MP3, WMA, ASF, APE, FLAC, OGG and other formats, and the support for double lossless formats also greatly improves the sound quality of the machine. At the same time, there are common, pop, jazz, rock, classic, soft, DBB and other EQ modes to choose from. It is worth mentioning that in order to highlight the sound effect, iriver also added SRS WOW HD sound effect to make it more outstanding in bass. In addition, iriverT8 also supports FM radio function, which can meet the needs of users who like listening to radio.

3. Sony NWZ-B 152F 299 yuan.

Judging from Sony's previous models, this price is basically a classic for popularizing walkman products. Although the price is unexpected, NWZ-B 152F perfectly continues several classic advantages of Sony, including one-button bass, three-minute fast charge and Zappin fast music selection. At the same time, the design of long straight USB interface is also convenient for users' daily use.

In terms of function, Sony NWZ-B 152F supports audio playback in MP3 (bit rate: 32-320kbps) and WMA (bit rate: 32- 192kbps) formats. In particular, it has advanced ZAPPIN fast song selection function, and users can extract songs for about 4 seconds or 15 seconds by pressing keys.

Although it is a low-end MP3 player, Sony's three-minute fast charging function is also used in it. Just connect NWZ-B 152F to the computer for automatic charging, and the music can be played continuously for about 90 minutes after charging for about 3 minutes. In addition, B 142F supports voice recording, which can be regarded as a compact recording pen and can be carried around. It also adds the FM playing and recording function which is very popular with players, and can search FM in the frequency range of 87.5~ 108.0 MHz.

4. Samsung U5 299 yuan

In terms of music, Samsung U5 supports audio files in MP3, WMA, OGG, FLAC and other formats. Samsung's unique DNSe3.0 natural sound effect can make music more perfect, and it can automatically choose the most suitable EQ position according to the song type. Whether you want to listen to rock, lyric, classical or jazz, the performance in details is also outstanding. Support FM broadcasting, FM recording, voice recording and A-B repetition, which can basically meet daily needs.

In addition to common functions, Samsung U5 is more suitable for friends who like sports. Enter your body information under the health management menu, and enter the daily exercise mode (running, walking, yoga, etc. ) and exercise time, so that you can easily achieve the purpose of exercising with moving music. Let fat burn freely during exercise.

5. Taipower X23

In terms of function, Taipower X23 adopts the new generation RKnano master chip of Ruixin Micro, which supports music playback in MP3, WMA, AAC, WAV, FLAC, APE and other formats, and supports double lossless formats, which also provides a good guarantee in terms of sound quality. X23 has specially added PLAY FX effect and a variety of custom EQ sound effects to meet the needs of fans who don't need music. Support recording, e-books and other functions, which can basically meet daily needs.

6. Blue Devil Q23

7.iriver's E30 is 299 yuan for 52 hours.