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GB/T 34999-2017 English PDF

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US$399.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 34999-2017: Technical requirements and measurement methods for digital audio recording system in broadcast center
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 34999-2017	399	Add to Cart	4 days	Technical requirements and measurement methods for digital audio recording system in broadcast center	Valid

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Basic data

Standard ID: GB/T 34999-2017 (GB/T34999-2017)
Description (Translated English): Technical requirements and measurement methods for digital audio recording system in broadcast center
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: M60
Classification of International Standard: 33.160.01
Word Count Estimation: 20,260
Date of Issue: 2017-11-01
Date of Implementation: 2018-02-01
Regulation (derived from): National Standard Announcement 2017 No. 29
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 34999-2017: Technical requirements and measurement methods for digital audio recording system in broadcast center

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Technical requirements and measurement methods for digital audio recording system in broadcast center ICS 33.160.01 M60 National Standards of People's Republic of China Broadcasting center digital audio recording system Technical requirements and measurement methods Posted.2017-11-01 2018-02-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms, definitions, abbreviations and symbols 1 4 technical requirements 2 5 measurement conditions and test equipment 5 6 measurement method 9 References 17

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some of this document may be patentable. The issuing agencies of this document do not bear the responsibility of identifying these patents. This standard is proposed by the State Administration of Press, Publication and Broadcasting. This standard by the National Radio and Television Television Standardization Technical Committee (SAC/TC239) centralized. This standard was drafted by the Central People's Broadcasting Station. The main drafters of this standard. Ji tsunami, Luo Pan, Xiao Guodong, Zhang Lei, Zhu Xiaobei, Li Weisen, Xu Zhenfeng, Zhong Ling Yu. Broadcasting center digital audio recording system Technical requirements and measurement methods

1 Scope

This standard specifies the broadcasting center digital audio recording system technical requirements and measurement methods. For any guarantee of the same measurement accuracy What equivalent method of measurement can also be used, the controversial should be based on this standard. This standard applies to the broadcast center digital audio recording system design, measurement, maintenance and acceptance.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. Electroacoustics octave and fractional octave band filters GB/T 3241-2010 Measurement of audio noise level in sound broadcasting GB/T 17147-2012 GY/T 158-2000 studio digital audio signal interface 3 Terms, definitions, abbreviations and symbols 3.1 Terms and definitions The following terms and definitions apply to this document. 3.1.1 Digital audio recording system digitalaudiorecordingsystem Systems that process and record audio signals digitally. 3.1.2 dBFS dBfulscale Unit of digital audio signal level. Notes 1.0dBFS (0 dB full scale) Digital audio reference level equal to "full scale" for digital audio devices with A/D and D/A converters An indicator. "Full Scale" is the maximum level of the encoded analog signal before the converter can reach "Digital Overload". Note 2. Rewrite GY/T 192-2003, definition 3.3. 3.1.3 Upper frequency upperband-edgefrequency The highest frequency of the signal being measured, which is 0.46 times the sampling frequency. Note. If the sampling frequency is higher than 44.1kHz, the equipment manufacturer can choose one of 20kHz and 0.46 times the sampling frequency as the upper limit frequency, and set Preparation of the system manual to be described. [GY/T 285-2014, definition 3.1.3] 3.1.4 Bottom pad noise signal dithersignal Random or pseudo-random sequence with triangular probability density function characteristic with peak-to-peak values of two least significant digits for digital audio input word length Bit (± 1LSB). At least in the upper frequency range, the level of noise should be consistent with the characteristics of white noise, that is, the energy per unit of bandwidth ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 34999-2017_English be delivered?

Answer: Upon your order, we will start to translate GB/T 34999-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 34999-2017_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 34999-2017_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.