Acoustic comfort refers to the general pleasantness of the sound environment — the absence of harsh sounds, appropriate reverberation time, comfortable ambient level. Speech privacy is a more specific and more measurable quality: the degree to which speech made in one space is not intelligible in an adjacent one. They are related but not the same. A well-acoustically-treated open-plan office may be acoustically comfortable (pleasant ambient, low reverberation) but still lacks speech privacy (nearby conversations remain partially intelligible). HIGHKA pods provide both: acoustic comfort (controlled interior acoustic environment) and certified speech privacy (DS,A = 29.4 dB bidirectional isolation, independently verified by SGS under ISO 23351-1). For professional use cases requiring confidential communication, speech privacy — not just comfort — is the relevant specification.