The article is devoted to the analysis of voiceless and voiced stop plosives’ realization in the speech of Russian-speaking children-bilinguals in Germany and their parents when reading a phonetically representative text aloud. The author measures the indicator of voice delay time relative to the moment of explosion in stop plosive consonants (voicing onset time - VOT) in bilingual children and their parents, as she considers it the most reliable acoustic indicator for distinguishing voiceless and voiced consonants. The phonetic categories of plosive stop consonants’ VOT differ in Russian and German, so VOT may be affected by interlingual phonetic interference.