Sound methodology and audio techniques engage in processing these sound waves.

声音和音频技术涉及的主要是声波的处理。

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That was another important stipulation in the RFP; they wanted the proposal to include a process — a good, sound, system development lifecycle methodology.

那是方案建议中的另外一个重要的约定；他们希望得到的建议包括过程——一个良好的、健康的系统开发生命周期方法学。

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MDD is a sound development methodology.

MDD 是可靠的开发方法。

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Unfortunately, a few Ivy League professors and peer review do not guarantee sound methodology, as this study clearly demonstrates.

FORBES: A Useless Study on Gun Possession

Deloitte's "methodology is sound, " says Mike Belko, chief underwriter at USAA Life Insurance Co.

WSJ: Insurers Test Data Profiles to Identify Risky Clients

In approaching this research project we developed our own methodology which we believed was sound and for which we found broad support in our discussions with consultants and managers.

FORBES: Why Pension Investment Advisory Fees Are So High (January 1, 2003 )